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commit bash-20200313 snapshot
This commit is contained in:
Chet Ramey
+84
-80
@@ -1,7 +1,7 @@
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%!PS-Adobe-2.0
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%%Creator: dvips(k) 5.999 Copyright 2019 Radical Eye Software
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@@ -12,7 +12,7 @@
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/TeXDict 300 dict def TeXDict begin/N{def}def/B{bind def}N/S{exch}N/X{S
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@@ -15428,78 +15428,82 @@ Ft(shopt)f(-s)h(checkhash)p Fu('.)p eop end
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%%Page: 101 107
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TeXDict begin 101 106 bop 150 -116 a Fu(Chapter)30 b(6:)41
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b(Bash)30 b(F)-8 b(eatures)2439 b(101)199 299 y(3.)61
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||||
b(The)42 b(message)h(prin)m(ted)e(b)m(y)h(the)g(job)g(con)m(trol)i(co)s
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||||
(de)e(and)f(builtins)h(when)f(a)h(job)g(exits)h(with)f(a)330
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408 y(non-zero)31 b(status)g(is)f(`Done\(status\)'.)199
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553 y(4.)61 b(The)40 b(message)h(prin)m(ted)f(b)m(y)g(the)h(job)f(con)m
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||||
b(Bash)36 b(will)g(not)g(insert)g(a)g(command)f(without)h(the)g
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||||
(execute)h(bit)f(set)g(in)m(to)h(the)f(command)g(hash)330
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||||
408 y(table,)c(ev)m(en)f(if)f(it)h(returns)e(it)i(as)g(a)f(\(last-ditc)
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||||
m(h\))j(result)d(from)g(a)h Ft($PATH)e Fu(searc)m(h.)199
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||||
540 y(4.)61 b(The)42 b(message)h(prin)m(ted)e(b)m(y)h(the)g(job)g(con)m
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||||
(trol)i(co)s(de)e(and)f(builtins)h(when)f(a)h(job)g(exits)h(with)f(a)
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||||
330 650 y(non-zero)31 b(status)g(is)f(`Done\(status\)'.)199
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||||
781 y(5.)61 b(The)40 b(message)h(prin)m(ted)f(b)m(y)g(the)h(job)f(con)m
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||||
(trol)h(co)s(de)g(and)f(builtins)f(when)h(a)g(job)g(is)h(stopp)s(ed)e
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||||
(is)330 662 y(`Stopp)s(ed\()p Fr(signame)5 b Fu(\)',)31
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||||
(is)330 891 y(`Stopp)s(ed\()p Fr(signame)5 b Fu(\)',)31
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||||
b(where)f Fr(signame)36 b Fu(is,)31 b(for)f(example,)h
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||||
Ft(SIGTSTP)p Fu(.)199 806 y(5.)61 b(Alias)31 b(expansion)g(is)f(alw)m
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Ft(SIGTSTP)p Fu(.)199 1022 y(6.)61 b(Alias)31 b(expansion)g(is)f(alw)m
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||||
(a)m(ys)i(enabled,)e(ev)m(en)i(in)e(non-in)m(teractiv)m(e)j(shells.)199
|
||||
951 y(6.)61 b(Reserv)m(ed)40 b(w)m(ords)g(app)s(earing)f(in)h(a)g(con)m
|
||||
(text)i(where)d(reserv)m(ed)h(w)m(ords)f(are)i(recognized)g(do)f(not)
|
||||
330 1060 y(undergo)30 b(alias)h(expansion.)199 1204 y(7.)61
|
||||
1154 y(7.)61 b(Reserv)m(ed)40 b(w)m(ords)g(app)s(earing)f(in)h(a)g(con)
|
||||
m(text)i(where)d(reserv)m(ed)h(w)m(ords)f(are)i(recognized)g(do)f(not)
|
||||
330 1263 y(undergo)30 b(alias)h(expansion.)199 1395 y(8.)61
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||||
b(The)38 b Fm(posix)h Ft(PS1)f Fu(and)g Ft(PS2)g Fu(expansions)g(of)i
|
||||
(`)p Ft(!)p Fu(')f(to)g(the)g(history)g(n)m(um)m(b)s(er)f(and)g(`)p
|
||||
Ft(!!)p Fu(')h(to)g(`)p Ft(!)p Fu(')h(are)330 1314 y(enabled,)26
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||||
Ft(!!)p Fu(')h(to)g(`)p Ft(!)p Fu(')h(are)330 1504 y(enabled,)26
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||||
b(and)f(parameter)g(expansion)g(is)g(p)s(erformed)e(on)i(the)g(v)-5
|
||||
b(alues)25 b(of)g Ft(PS1)f Fu(and)h Ft(PS2)f Fu(regardless)330
|
||||
1424 y(of)31 b(the)f(setting)i(of)e(the)h Ft(promptvars)c
|
||||
Fu(option.)199 1568 y(8.)61 b(The)30 b Fm(posix)g Fu(startup)f(\014les)
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||||
1614 y(of)31 b(the)f(setting)i(of)e(the)h Ft(promptvars)c
|
||||
Fu(option.)199 1745 y(9.)61 b(The)30 b Fm(posix)g Fu(startup)f(\014les)
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||||
i(are)g(executed)g(\()p Ft($ENV)p Fu(\))f(rather)g(than)g(the)h(normal)
|
||||
f(Bash)g(\014les.)199 1712 y(9.)61 b(Tilde)30 b(expansion)g(is)f(only)h
|
||||
(p)s(erformed)f(on)h(assignmen)m(ts)g(preceding)g(a)g(command)g(name,)g
|
||||
(rather)330 1822 y(than)g(on)g(all)i(assignmen)m(t)f(statemen)m(ts)h
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||||
(on)e(the)h(line.)154 1966 y(10.)61 b(The)30 b(default)g(history)h
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||||
f(Bash)g(\014les.)154 1877 y(10.)61 b(Tilde)30 b(expansion)g(is)f(only)
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h(p)s(erformed)f(on)h(assignmen)m(ts)g(preceding)g(a)g(command)g(name,)
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||||
g(rather)330 1987 y(than)g(on)g(all)i(assignmen)m(t)f(statemen)m(ts)h
|
||||
(on)e(the)h(line.)154 2118 y(11.)61 b(The)30 b(default)g(history)h
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(\014le)f(is)h Ft(~/.sh_history)26 b Fu(\(this)31 b(is)f(the)h(default)
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g(v)-5 b(alue)30 b(of)h Ft($HISTFILE)p Fu(\).)154 2110
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y(11.)61 b(Redirection)25 b(op)s(erators)f(do)g(not)g(p)s(erform)f
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g(v)-5 b(alue)30 b(of)h Ft($HISTFILE)p Fu(\).)154 2250
|
||||
y(12.)61 b(Redirection)25 b(op)s(erators)f(do)g(not)g(p)s(erform)f
|
||||
(\014lename)h(expansion)g(on)g(the)g(w)m(ord)f(in)h(the)g(redirection)
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330 2220 y(unless)30 b(the)g(shell)h(is)f(in)m(teractiv)m(e.)154
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2364 y(12.)61 b(Redirection)31 b(op)s(erators)g(do)f(not)h(p)s(erform)e
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330 2359 y(unless)30 b(the)g(shell)h(is)f(in)m(teractiv)m(e.)154
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2491 y(13.)61 b(Redirection)31 b(op)s(erators)g(do)f(not)h(p)s(erform)e
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(w)m(ord)h(splitting)h(on)f(the)h(w)m(ord)f(in)g(the)g(redirection.)154
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2508 y(13.)61 b(F)-8 b(unction)35 b(names)g(m)m(ust)f(b)s(e)g(v)-5
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2622 y(14.)61 b(F)-8 b(unction)35 b(names)g(m)m(ust)f(b)s(e)g(v)-5
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b(alid)35 b(shell)f Ft(name)p Fu(s.)52 b(That)34 b(is,)i(they)f(ma)m(y)
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g(not)g(con)m(tain)g(c)m(haracters)330 2618 y(other)e(than)g(letters,)h
|
||||
g(not)g(con)m(tain)g(c)m(haracters)330 2732 y(other)e(than)g(letters,)h
|
||||
(digits,)h(and)d(underscores,)h(and)f(ma)m(y)h(not)g(start)h(with)e(a)h
|
||||
(digit.)49 b(Declaring)330 2727 y(a)31 b(function)f(with)g(an)g(in)m(v)
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(digit.)49 b(Declaring)330 2841 y(a)31 b(function)f(with)g(an)g(in)m(v)
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||||
-5 b(alid)31 b(name)g(causes)f(a)h(fatal)h(syn)m(tax)f(error)f(in)g
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||||
(non-in)m(teractiv)m(e)j(shells.)154 2871 y(14.)61 b(F)-8
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(non-in)m(teractiv)m(e)j(shells.)154 2973 y(15.)61 b(F)-8
|
||||
b(unction)31 b(names)f(ma)m(y)h(not)g(b)s(e)f(the)g(same)h(as)g(one)f
|
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(of)h(the)f Fm(posix)g Fu(sp)s(ecial)h(builtins.)154
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3016 y(15.)61 b Fm(posix)30 b Fu(sp)s(ecial)h(builtins)e(are)i(found)e
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3104 y(16.)61 b Fm(posix)30 b Fu(sp)s(ecial)h(builtins)e(are)i(found)e
|
||||
(b)s(efore)h(shell)h(functions)f(during)f(command)h(lo)s(okup.)154
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3160 y(16.)61 b(When)48 b(prin)m(ting)g(shell)h(function)f
|
||||
3236 y(17.)61 b(When)48 b(prin)m(ting)g(shell)h(function)f
|
||||
(de\014nitions)g(\(e.g.,)55 b(b)m(y)48 b Ft(type)p Fu(\),)k(Bash)d(do)s
|
||||
(es)f(not)h(prin)m(t)f(the)330 3269 y Ft(function)28
|
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b Fu(k)m(eyw)m(ord.)154 3414 y(17.)61 b(Literal)28 b(tildes)g(that)f
|
||||
(es)f(not)h(prin)m(t)f(the)330 3345 y Ft(function)28
|
||||
b Fu(k)m(eyw)m(ord.)154 3477 y(18.)61 b(Literal)28 b(tildes)g(that)f
|
||||
(app)s(ear)f(as)i(the)f(\014rst)f(c)m(haracter)j(in)d(elemen)m(ts)j(of)
|
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e(the)g Ft(PATH)f Fu(v)-5 b(ariable)27 b(are)h(not)330
|
||||
3523 y(expanded)i(as)g(describ)s(ed)f(ab)s(o)m(v)m(e)j(under)d(Section)
|
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i(3.5.2)h([Tilde)f(Expansion],)f(page)h(24.)154 3667
|
||||
y(18.)61 b(The)29 b Ft(time)g Fu(reserv)m(ed)h(w)m(ord)g(ma)m(y)g(b)s
|
||||
3587 y(expanded)i(as)g(describ)s(ed)f(ab)s(o)m(v)m(e)j(under)d(Section)
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||||
i(3.5.2)h([Tilde)f(Expansion],)f(page)h(24.)154 3718
|
||||
y(19.)61 b(The)29 b Ft(time)g Fu(reserv)m(ed)h(w)m(ord)g(ma)m(y)g(b)s
|
||||
(e)g(used)f(b)m(y)h(itself)g(as)g(a)h(command.)40 b(When)30
|
||||
b(used)f(in)g(this)h(w)m(a)m(y)-8 b(,)330 3777 y(it)33
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||||
b(used)f(in)g(this)h(w)m(a)m(y)-8 b(,)330 3828 y(it)33
|
||||
b(displa)m(ys)g(timing)g(statistics)h(for)e(the)h(shell)g(and)f(its)g
|
||||
(completed)i(c)m(hildren.)47 b(The)32 b Ft(TIMEFORMAT)330
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||||
3886 y Fu(v)-5 b(ariable)31 b(con)m(trols)h(the)e(format)h(of)g(the)f
|
||||
(timing)h(information.)154 4031 y(19.)61 b(When)33 b(parsing)g(and)f
|
||||
3937 y Fu(v)-5 b(ariable)31 b(con)m(trols)h(the)e(format)h(of)g(the)f
|
||||
(timing)h(information.)154 4069 y(20.)61 b(When)33 b(parsing)g(and)f
|
||||
(expanding)h(a)h($)p Fi({)6 b Fu(.)22 b(.)h(.)11 b Fi(})33
|
||||
b Fu(expansion)g(that)h(app)s(ears)f(within)f(double)h(quotes,)330
|
||||
4140 y(single)42 b(quotes)g(are)g(no)g(longer)g(sp)s(ecial)g(and)f
|
||||
4178 y(single)42 b(quotes)g(are)g(no)g(longer)g(sp)s(ecial)g(and)f
|
||||
(cannot)i(b)s(e)e(used)g(to)h(quote)g(a)g(closing)h(brace)f(or)330
|
||||
4250 y(other)31 b(sp)s(ecial)h(c)m(haracter,)i(unless)c(the)i(op)s
|
||||
4288 y(other)31 b(sp)s(ecial)h(c)m(haracter,)i(unless)c(the)i(op)s
|
||||
(erator)f(is)g(one)h(of)f(those)h(de\014ned)e(to)i(p)s(erform)e
|
||||
(pattern)330 4359 y(remo)m(v)-5 b(al.)42 b(In)30 b(this)g(case,)i(they)
|
||||
(pattern)330 4398 y(remo)m(v)-5 b(al.)42 b(In)30 b(this)g(case,)i(they)
|
||||
e(do)g(not)h(ha)m(v)m(e)h(to)f(app)s(ear)e(as)i(matc)m(hed)g(pairs.)154
|
||||
4504 y(20.)61 b(The)29 b(parser)g(do)s(es)g(not)h(recognize)h
|
||||
4529 y(21.)61 b(The)29 b(parser)g(do)s(es)g(not)h(recognize)h
|
||||
Ft(time)d Fu(as)i(a)g(reserv)m(ed)f(w)m(ord)g(if)h(the)f(next)h(tok)m
|
||||
(en)h(b)s(egins)d(with)i(a)330 4613 y(`)p Ft(-)p Fu('.)154
|
||||
4757 y(21.)61 b(The)30 b(`)p Ft(!)p Fu(')h(c)m(haracter)h(do)s(es)e
|
||||
(en)h(b)s(egins)d(with)i(a)330 4639 y(`)p Ft(-)p Fu('.)154
|
||||
4770 y(22.)61 b(The)30 b(`)p Ft(!)p Fu(')h(c)m(haracter)h(do)s(es)e
|
||||
(not)h(in)m(tro)s(duce)g(history)f(expansion)h(within)f(a)h
|
||||
(double-quoted)g(string,)330 4867 y(ev)m(en)g(if)f(the)h
|
||||
Ft(histexpand)d Fu(option)i(is)h(enabled.)154 5011 y(22.)61
|
||||
(double-quoted)g(string,)330 4880 y(ev)m(en)g(if)f(the)h
|
||||
Ft(histexpand)d Fu(option)i(is)h(enabled.)154 5011 y(23.)61
|
||||
b(If)24 b(a)g Fm(posix)g Fu(sp)s(ecial)h(builtin)f(returns)f(an)h
|
||||
(error)g(status,)i(a)e(non-in)m(teractiv)m(e)j(shell)e(exits.)39
|
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b(The)24 b(fatal)330 5121 y(errors)30 b(are)h(those)f(listed)h(in)f
|
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@@ -15510,73 +15514,73 @@ b(The)24 b(fatal)330 5121 y(errors)30 b(are)h(those)f(listed)h(in)f
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eop end
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%%Page: 102 108
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TeXDict begin 102 107 bop 150 -116 a Fu(Chapter)30 b(6:)41
|
||||
b(Bash)30 b(F)-8 b(eatures)2439 b(102)154 299 y(23.)61
|
||||
b(Bash)30 b(F)-8 b(eatures)2439 b(102)154 299 y(24.)61
|
||||
b(A)31 b(non-in)m(teractiv)m(e)j(shell)d(exits)h(with)e(an)h(error)g
|
||||
(status)g(if)g(a)g(v)-5 b(ariable)32 b(assignmen)m(t)g(error)e(o)s
|
||||
(ccurs)330 408 y(when)38 b(no)h(command)g(name)g(follo)m(ws)i(the)e
|
||||
(assignmen)m(t)h(statemen)m(ts.)69 b(A)39 b(v)-5 b(ariable)40
|
||||
b(assignmen)m(t)330 518 y(error)30 b(o)s(ccurs,)g(for)g(example,)i
|
||||
(when)d(trying)i(to)g(assign)f(a)h(v)-5 b(alue)31 b(to)g(a)g(readonly)f
|
||||
(v)-5 b(ariable.)154 656 y(24.)61 b(A)31 b(non-in)m(teractiv)m(e)j
|
||||
(v)-5 b(ariable.)154 656 y(25.)61 b(A)31 b(non-in)m(teractiv)m(e)j
|
||||
(shell)d(exits)h(with)e(an)h(error)g(status)g(if)g(a)g(v)-5
|
||||
b(ariable)32 b(assignmen)m(t)g(error)e(o)s(ccurs)330
|
||||
766 y(in)g(an)g(assignmen)m(t)i(statemen)m(t)g(preceding)e(a)h(sp)s
|
||||
(ecial)g(builtin,)f(but)g(not)g(with)h(an)m(y)f(other)h(simple)330
|
||||
876 y(command.)154 1014 y(25.)61 b(A)43 b(non-in)m(teractiv)m(e)i
|
||||
876 y(command.)154 1014 y(26.)61 b(A)43 b(non-in)m(teractiv)m(e)i
|
||||
(shell)e(exits)h(with)f(an)f(error)h(status)g(if)g(the)g(iteration)h(v)
|
||||
-5 b(ariable)44 b(in)f(a)g Ft(for)330 1124 y Fu(statemen)m(t)32
|
||||
b(or)f(the)f(selection)i(v)-5 b(ariable)32 b(in)e(a)g
|
||||
Ft(select)f Fu(statemen)m(t)j(is)f(a)f(readonly)h(v)-5
|
||||
b(ariable.)154 1262 y(26.)61 b(Non-in)m(teractiv)m(e)34
|
||||
b(ariable.)154 1262 y(27.)61 b(Non-in)m(teractiv)m(e)34
|
||||
b(shells)c(exit)h(if)g Fr(\014lename)k Fu(in)30 b Ft(.)g
|
||||
Fr(\014lename)36 b Fu(is)31 b(not)f(found.)154 1401 y(27.)61
|
||||
Fr(\014lename)36 b Fu(is)31 b(not)f(found.)154 1401 y(28.)61
|
||||
b(Non-in)m(teractiv)m(e)41 b(shells)d(exit)h(if)f(a)g(syn)m(tax)g
|
||||
(error)g(in)f(an)h(arithmetic)h(expansion)f(results)f(in)h(an)330
|
||||
1510 y(in)m(v)-5 b(alid)31 b(expression.)154 1649 y(28.)61
|
||||
1510 y(in)m(v)-5 b(alid)31 b(expression.)154 1649 y(29.)61
|
||||
b(Non-in)m(teractiv)m(e)34 b(shells)c(exit)h(if)g(a)f(parameter)h
|
||||
(expansion)g(error)f(o)s(ccurs.)154 1787 y(29.)61 b(Non-in)m(teractiv)m
|
||||
(expansion)g(error)f(o)s(ccurs.)154 1787 y(30.)61 b(Non-in)m(teractiv)m
|
||||
(e)27 b(shells)c(exit)i(if)e(there)h(is)f(a)h(syn)m(tax)g(error)f(in)g
|
||||
(a)h(script)f(read)g(with)h(the)f Ft(.)g Fu(or)h Ft(source)330
|
||||
1897 y Fu(builtins,)30 b(or)g(in)g(a)h(string)g(pro)s(cessed)e(b)m(y)i
|
||||
(the)f Ft(eval)f Fu(builtin.)154 2035 y(30.)61 b(While)32
|
||||
(the)f Ft(eval)f Fu(builtin.)154 2035 y(31.)61 b(While)32
|
||||
b(v)-5 b(ariable)32 b(indirection)f(is)g(a)m(v)-5 b(ailable,)34
|
||||
b(it)d(ma)m(y)h(not)f(b)s(e)g(applied)g(to)g(the)h(`)p
|
||||
Ft(#)p Fu(')f(and)f(`)p Ft(?)p Fu(')h(sp)s(ecial)330
|
||||
2145 y(parameters.)154 2283 y(31.)61 b(When)28 b(expanding)g(the)g(`)p
|
||||
2145 y(parameters.)154 2283 y(32.)61 b(When)28 b(expanding)g(the)g(`)p
|
||||
Ft(*)p Fu(')g(sp)s(ecial)h(parameter)f(in)g(a)h(pattern)f(con)m(text)i
|
||||
(where)e(the)g(expansion)g(is)330 2393 y(double-quoted)i(do)s(es)g(not)
|
||||
h(treat)h(the)e Ft($*)g Fu(as)h(if)f(it)h(w)m(ere)g(double-quoted.)154
|
||||
2531 y(32.)61 b(Assignmen)m(t)23 b(statemen)m(ts)h(preceding)e
|
||||
2531 y(33.)61 b(Assignmen)m(t)23 b(statemen)m(ts)h(preceding)e
|
||||
Fm(posix)f Fu(sp)s(ecial)i(builtins)f(p)s(ersist)g(in)f(the)i(shell)f
|
||||
(en)m(vironmen)m(t)330 2641 y(after)31 b(the)f(builtin)g(completes.)154
|
||||
2779 y(33.)61 b(Assignmen)m(t)35 b(statemen)m(ts)h(preceding)f(shell)f
|
||||
2779 y(34.)61 b(Assignmen)m(t)35 b(statemen)m(ts)h(preceding)f(shell)f
|
||||
(function)g(calls)i(p)s(ersist)e(in)g(the)h(shell)f(en)m(vironmen)m(t)
|
||||
330 2889 y(after)d(the)f(function)h(returns,)e(as)i(if)f(a)h
|
||||
Fm(posix)e Fu(sp)s(ecial)i(builtin)f(command)g(had)g(b)s(een)g
|
||||
(executed.)154 3027 y(34.)61 b(The)31 b Ft(command)e
|
||||
(executed.)154 3027 y(35.)61 b(The)31 b Ft(command)e
|
||||
Fu(builtin)i(do)s(es)g(not)h(prev)m(en)m(t)f(builtins)g(that)h(tak)m(e)
|
||||
h(assignmen)m(t)f(statemen)m(ts)h(as)f(ar-)330 3137 y(gumen)m(ts)40
|
||||
b(from)e(expanding)h(them)g(as)h(assignmen)m(t)g(statemen)m(ts;)46
|
||||
b(when)38 b(not)i(in)f Fm(posix)f Fu(mo)s(de,)330 3246
|
||||
y(assignmen)m(t)k(builtins)e(lose)h(their)g(assignmen)m(t)h(statemen)m
|
||||
(t)h(expansion)d(prop)s(erties)g(when)g(pre-)330 3356
|
||||
y(ceded)31 b(b)m(y)f Ft(command)p Fu(.)154 3494 y(35.)61
|
||||
y(ceded)31 b(b)m(y)f Ft(command)p Fu(.)154 3494 y(36.)61
|
||||
b(The)27 b Ft(bg)g Fu(builtin)g(uses)g(the)h(required)f(format)h(to)g
|
||||
(describ)s(e)f(eac)m(h)i(job)e(placed)h(in)f(the)h(bac)m(kground,)330
|
||||
3604 y(whic)m(h)h(do)s(es)g(not)g(include)g(an)g(indication)h(of)f
|
||||
(whether)f(the)h(job)g(is)g(the)h(curren)m(t)e(or)h(previous)g(job.)154
|
||||
3742 y(36.)61 b(The)23 b(output)f(of)i(`)p Ft(kill)29
|
||||
3742 y(37.)61 b(The)23 b(output)f(of)i(`)p Ft(kill)29
|
||||
b(-l)p Fu(')23 b(prin)m(ts)f(all)i(the)g(signal)f(names)g(on)g(a)h
|
||||
(single)g(line,)h(separated)e(b)m(y)g(spaces,)330 3852
|
||||
y(without)30 b(the)h(`)p Ft(SIG)p Fu(')f(pre\014x.)154
|
||||
3990 y(37.)61 b(The)30 b Ft(kill)f Fu(builtin)h(do)s(es)g(not)h(accept)
|
||||
3990 y(38.)61 b(The)30 b Ft(kill)f Fu(builtin)h(do)s(es)g(not)h(accept)
|
||||
h(signal)f(names)f(with)g(a)h(`)p Ft(SIG)p Fu(')f(pre\014x.)154
|
||||
4129 y(38.)61 b(The)38 b Ft(export)f Fu(and)g Ft(readonly)f
|
||||
4129 y(39.)61 b(The)38 b Ft(export)f Fu(and)g Ft(readonly)f
|
||||
Fu(builtin)i(commands)g(displa)m(y)h(their)f(output)g(in)g(the)h
|
||||
(format)g(re-)330 4238 y(quired)30 b(b)m(y)g Fm(posix)p
|
||||
Fu(.)154 4377 y(39.)61 b(The)30 b Ft(trap)f Fu(builtin)h(displa)m(ys)g
|
||||
Fu(.)154 4377 y(40.)61 b(The)30 b Ft(trap)f Fu(builtin)h(displa)m(ys)g
|
||||
(signal)i(names)e(without)g(the)h(leading)g Ft(SIG)p
|
||||
Fu(.)154 4515 y(40.)61 b(The)39 b Ft(trap)e Fu(builtin)i(do)s(esn't)g
|
||||
Fu(.)154 4515 y(41.)61 b(The)39 b Ft(trap)e Fu(builtin)i(do)s(esn't)g
|
||||
(c)m(hec)m(k)h(the)g(\014rst)e(argumen)m(t)i(for)e(a)i(p)s(ossible)e
|
||||
(signal)i(sp)s(eci\014cation)330 4625 y(and)30 b(rev)m(ert)i(the)e
|
||||
(signal)i(handling)e(to)h(the)g(original)h(disp)s(osition)e(if)h(it)g
|
||||
@@ -15585,11 +15589,11 @@ Fu(.)154 4515 y(40.)61 b(The)39 b Ft(trap)e Fu(builtin)i(do)s(esn't)g
|
||||
b(If)28 b(users)g(w)m(an)m(t)h(to)g(reset)g(the)g(handler)330
|
||||
4844 y(for)h(a)g(giv)m(en)h(signal)g(to)f(the)h(original)g(disp)s
|
||||
(osition,)f(they)g(should)f(use)h(`)p Ft(-)p Fu(')g(as)g(the)g(\014rst)
|
||||
f(argumen)m(t.)154 4982 y(41.)61 b(The)21 b Ft(.)h Fu(and)f
|
||||
f(argumen)m(t.)154 4982 y(42.)61 b(The)21 b Ft(.)h Fu(and)f
|
||||
Ft(source)f Fu(builtins)h(do)g(not)h(searc)m(h)h(the)f(curren)m(t)f
|
||||
(directory)h(for)g(the)g(\014lename)f(argumen)m(t)330
|
||||
5092 y(if)30 b(it)h(is)g(not)f(found)f(b)m(y)i(searc)m(hing)g
|
||||
Ft(PATH)p Fu(.)154 5230 y(42.)61 b(Enabling)21 b Fm(posix)g
|
||||
Ft(PATH)p Fu(.)154 5230 y(43.)61 b(Enabling)21 b Fm(posix)g
|
||||
Fu(mo)s(de)g(has)g(the)g(e\013ect)i(of)e(setting)i(the)e
|
||||
Ft(inherit_errexit)d Fu(option,)23 b(so)f(subshells)330
|
||||
5340 y(spa)m(wned)27 b(to)i(execute)g(command)e(substitutions)h
|
||||
@@ -15601,30 +15605,30 @@ b(Bash)30 b(F)-8 b(eatures)2439 b(103)330 299 y(paren)m(t)37
|
||||
b(shell.)62 b(When)37 b(the)g Ft(inherit_errexit)c Fu(option)38
|
||||
b(is)f(not)h(enabled,)h(Bash)e(clears)h(the)g Ft(-e)330
|
||||
408 y Fu(option)31 b(in)f(suc)m(h)g(subshells.)154 542
|
||||
y(43.)61 b(Enabling)32 b Fm(posix)f Fu(mo)s(de)h(has)g(the)h(e\013ect)g
|
||||
y(44.)61 b(Enabling)32 b Fm(posix)f Fu(mo)s(de)h(has)g(the)h(e\013ect)g
|
||||
(of)g(setting)g(the)g Ft(shift_verbose)28 b Fu(option,)34
|
||||
b(so)e(n)m(umeric)330 652 y(argumen)m(ts)f(to)g Ft(shift)f
|
||||
Fu(that)h(exceed)h(the)e(n)m(um)m(b)s(er)g(of)h(p)s(ositional)g
|
||||
(parameters)g(will)g(result)g(in)f(an)330 762 y(error)g(message.)154
|
||||
896 y(44.)61 b(When)43 b(the)g Ft(alias)f Fu(builtin)g(displa)m(ys)i
|
||||
896 y(45.)61 b(When)43 b(the)g Ft(alias)f Fu(builtin)g(displa)m(ys)i
|
||||
(alias)g(de\014nitions,)i(it)d(do)s(es)g(not)g(displa)m(y)h(them)f
|
||||
(with)g(a)330 1005 y(leading)31 b(`)p Ft(alias)e Fu(')i(unless)f(the)g
|
||||
Ft(-p)g Fu(option)h(is)f(supplied.)154 1139 y(45.)61
|
||||
Ft(-p)g Fu(option)h(is)f(supplied.)154 1139 y(46.)61
|
||||
b(When)40 b(the)g Ft(set)f Fu(builtin)h(is)g(in)m(v)m(ok)m(ed)h
|
||||
(without)f(options,)j(it)e(do)s(es)f(not)g(displa)m(y)g(shell)g
|
||||
(function)330 1249 y(names)30 b(and)g(de\014nitions.)154
|
||||
1383 y(46.)61 b(When)36 b(the)g Ft(set)g Fu(builtin)g(is)g(in)m(v)m(ok)
|
||||
1383 y(47.)61 b(When)36 b(the)g Ft(set)g Fu(builtin)g(is)g(in)m(v)m(ok)
|
||||
m(ed)i(without)e(options,)i(it)f(displa)m(ys)f(v)-5 b(ariable)37
|
||||
b(v)-5 b(alues)37 b(without)330 1492 y(quotes,)26 b(unless)d(they)i
|
||||
(con)m(tain)g(shell)f(metac)m(haracters,)k(ev)m(en)d(if)f(the)g(result)
|
||||
g(con)m(tains)i(nonprin)m(ting)330 1602 y(c)m(haracters.)154
|
||||
1736 y(47.)61 b(When)35 b(the)g Ft(cd)f Fu(builtin)h(is)g(in)m(v)m(ok)m
|
||||
1736 y(48.)61 b(When)35 b(the)g Ft(cd)f Fu(builtin)h(is)g(in)m(v)m(ok)m
|
||||
(ed)i(in)d Fr(logical)41 b Fu(mo)s(de,)36 b(and)f(the)g(pathname)g
|
||||
(constructed)g(from)330 1845 y Ft($PWD)i Fu(and)h(the)h(directory)f
|
||||
(name)h(supplied)e(as)i(an)f(argumen)m(t)h(do)s(es)f(not)g(refer)h(to)g
|
||||
(an)f(existing)330 1955 y(directory)-8 b(,)32 b Ft(cd)d
|
||||
Fu(will)i(fail)g(instead)g(of)f(falling)h(bac)m(k)h(to)f
|
||||
Fr(ph)m(ysical)j Fu(mo)s(de.)154 2089 y(48.)61 b(When)37
|
||||
Fr(ph)m(ysical)j Fu(mo)s(de.)154 2089 y(49.)61 b(When)37
|
||||
b(the)h Ft(cd)f Fu(builtin)g(cannot)h(c)m(hange)h(a)f(directory)g(b)s
|
||||
(ecause)g(the)g(length)g(of)f(the)h(pathname)330 2198
|
||||
y(constructed)52 b(from)f Ft($PWD)f Fu(and)g(the)i(directory)g(name)f
|
||||
@@ -15632,46 +15636,46 @@ y(constructed)52 b(from)f Ft($PWD)f Fu(and)g(the)i(directory)g(name)f
|
||||
y Fr(P)-8 b(A)g(TH)p 584 2308 28 4 v 41 w(MAX)42 b Fu(when)31
|
||||
b(all)j(sym)m(b)s(olic)e(links)h(are)f(expanded,)h Ft(cd)f
|
||||
Fu(will)g(fail)h(instead)g(of)g(attempting)330 2418 y(to)e(use)f(only)h
|
||||
(the)f(supplied)f(directory)i(name.)154 2552 y(49.)61
|
||||
(the)f(supplied)f(directory)i(name.)154 2552 y(50.)61
|
||||
b(The)36 b Ft(pwd)f Fu(builtin)h(v)m(eri\014es)h(that)g(the)f(v)-5
|
||||
b(alue)37 b(it)g(prin)m(ts)e(is)i(the)f(same)h(as)f(the)h(curren)m(t)f
|
||||
(directory)-8 b(,)330 2661 y(ev)m(en)31 b(if)f(it)h(is)g(not)f(ask)m
|
||||
(ed)h(to)g(c)m(hec)m(k)h(the)f(\014le)f(system)h(with)f(the)h
|
||||
Ft(-P)e Fu(option.)154 2795 y(50.)61 b(When)35 b(listing)g(the)g
|
||||
Ft(-P)e Fu(option.)154 2795 y(51.)61 b(When)35 b(listing)g(the)g
|
||||
(history)-8 b(,)36 b(the)f Ft(fc)g Fu(builtin)f(do)s(es)g(not)h
|
||||
(include)g(an)f(indication)i(of)f(whether)f(or)330 2905
|
||||
y(not)d(a)f(history)h(en)m(try)f(has)g(b)s(een)g(mo)s(di\014ed.)154
|
||||
3039 y(51.)61 b(The)30 b(default)g(editor)h(used)f(b)m(y)g
|
||||
Ft(fc)g Fu(is)g Ft(ed)p Fu(.)154 3173 y(52.)61 b(The)37
|
||||
3039 y(52.)61 b(The)30 b(default)g(editor)h(used)f(b)m(y)g
|
||||
Ft(fc)g Fu(is)g Ft(ed)p Fu(.)154 3173 y(53.)61 b(The)37
|
||||
b Ft(type)g Fu(and)g Ft(command)f Fu(builtins)i(will)g(not)g(rep)s(ort)
|
||||
f(a)i(non-executable)g(\014le)f(as)g(ha)m(ving)h(b)s(een)330
|
||||
3282 y(found,)26 b(though)h(the)g(shell)g(will)g(attempt)h(to)g
|
||||
(execute)g(suc)m(h)f(a)g(\014le)g(if)g(it)g(is)g(the)g(only)g(so-named)
|
||||
g(\014le)330 3392 y(found)i(in)h Ft($PATH)p Fu(.)154
|
||||
3526 y(53.)61 b(The)33 b Ft(vi)f Fu(editing)i(mo)s(de)f(will)g(in)m(v)m
|
||||
3526 y(54.)61 b(The)33 b Ft(vi)f Fu(editing)i(mo)s(de)f(will)g(in)m(v)m
|
||||
(ok)m(e)i(the)e Ft(vi)g Fu(editor)h(directly)f(when)f(the)i(`)p
|
||||
Ft(v)p Fu(')f(command)g(is)g(run,)330 3635 y(instead)e(of)f(c)m(hec)m
|
||||
(king)i Ft($VISUAL)d Fu(and)g Ft($EDITOR)p Fu(.)154 3769
|
||||
y(54.)61 b(When)41 b(the)g Ft(xpg_echo)e Fu(option)i(is)g(enabled,)j
|
||||
y(55.)61 b(When)41 b(the)g Ft(xpg_echo)e Fu(option)i(is)g(enabled,)j
|
||||
(Bash)d(do)s(es)g(not)g(attempt)h(to)g(in)m(terpret)f(an)m(y)h(ar-)330
|
||||
3879 y(gumen)m(ts)35 b(to)g Ft(echo)e Fu(as)i(options.)54
|
||||
b(Eac)m(h)35 b(argumen)m(t)g(is)f(displa)m(y)m(ed,)j(after)e(escap)s(e)
|
||||
g(c)m(haracters)h(are)330 3988 y(con)m(v)m(erted.)154
|
||||
4122 y(55.)61 b(The)30 b Ft(ulimit)f Fu(builtin)g(uses)h(a)h(blo)s(c)m
|
||||
4122 y(56.)61 b(The)30 b Ft(ulimit)f Fu(builtin)g(uses)h(a)h(blo)s(c)m
|
||||
(k)g(size)g(of)g(512)g(b)m(ytes)g(for)f(the)h Ft(-c)f
|
||||
Fu(and)g Ft(-f)f Fu(options.)154 4256 y(56.)61 b(The)39
|
||||
Fu(and)g Ft(-f)f Fu(options.)154 4256 y(57.)61 b(The)39
|
||||
b(arriv)-5 b(al)41 b(of)f Ft(SIGCHLD)e Fu(when)h(a)h(trap)g(is)g(set)h
|
||||
(on)f Ft(SIGCHLD)e Fu(do)s(es)h(not)h(in)m(terrupt)g(the)g
|
||||
Ft(wait)330 4366 y Fu(builtin)c(and)h(cause)g(it)h(to)f(return)f
|
||||
(immediately)-8 b(.)62 b(The)37 b(trap)f(command)h(is)g(run)e(once)j
|
||||
(for)f(eac)m(h)330 4475 y(c)m(hild)31 b(that)g(exits.)154
|
||||
4609 y(57.)61 b(The)27 b Ft(read)f Fu(builtin)g(ma)m(y)i(b)s(e)e(in)m
|
||||
4609 y(58.)61 b(The)27 b Ft(read)f Fu(builtin)g(ma)m(y)i(b)s(e)e(in)m
|
||||
(terrupted)h(b)m(y)g(a)h(signal)f(for)g(whic)m(h)g(a)h(trap)f(has)g(b)s
|
||||
(een)f(set.)40 b(If)27 b(Bash)330 4719 y(receiv)m(es)41
|
||||
b(a)f(trapp)s(ed)e(signal)i(while)f(executing)h Ft(read)p
|
||||
Fu(,)h(the)e(trap)h(handler)e(executes)i(and)f Ft(read)330
|
||||
4829 y Fu(returns)29 b(an)h(exit)i(status)e(greater)i(than)e(128.)154
|
||||
4963 y(58.)61 b(Bash)27 b(remo)m(v)m(es)h(an)e(exited)i(bac)m(kground)e
|
||||
4963 y(59.)61 b(Bash)27 b(remo)m(v)m(es)h(an)e(exited)i(bac)m(kground)e
|
||||
(pro)s(cess's)h(status)g(from)f(the)h(list)g(of)g(suc)m(h)f(statuses)h
|
||||
(after)330 5072 y(the)k Ft(wait)e Fu(builtin)h(is)g(used)g(to)h(obtain)
|
||||
g(it.)275 5230 y(There)j(is)g(other)h Fm(posix)f Fu(b)s(eha)m(vior)h
|
||||
|
||||
Reference in New Issue
Block a user