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fix for EXIT trap in -c command; suspend -f now suspends even if job control is not enabled
This commit is contained in:
Chet Ramey
+122
-120
@@ -1,7 +1,7 @@
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||||
(logical)i(negation)f(of)e(the)h(exit)g(status)g(as)g(describ)s(ed)150
|
||||
4770 y(ab)s(o)m(v)m(e.)63 b(The)38 b(shell)f(w)m(aits)i(for)e(all)i
|
||||
(commands)e(in)g(the)h(pip)s(eline)f(to)h(terminate)h(b)s(efore)e
|
||||
(returning)g(a)150 4879 y(v)-5 b(alue.)150 5083 y Fk(3.2.4)63
|
||||
b(Lists)41 b(of)h(Commands)150 5230 y Fu(A)37 b Ft(list)e
|
||||
Fu(is)i(a)g(sequence)g(of)g(one)g(or)f(more)h(pip)s(elines)f(separated)
|
||||
h(b)m(y)g(one)g(of)f(the)h(op)s(erators)g(`)p Ft(;)p
|
||||
Fu(',)i(`)p Ft(&)p Fu(',)150 5340 y(`)p Ft(&&)p Fu(',)31
|
||||
b(or)f(`)p Ft(||)p Fu(',)g(and)g(optionally)i(terminated)f(b)m(y)f(one)
|
||||
h(of)f(`)p Ft(;)p Fu(',)h(`)p Ft(&)p Fu(',)g(or)f(a)h
|
||||
Ft(newline)p Fu(.)p eop end
|
||||
%%Page: 11 17
|
||||
TeXDict begin 11 16 bop 150 -116 a Fu(Chapter)30 b(3:)41
|
||||
b(Basic)32 b(Shell)e(F)-8 b(eatures)2246 b(11)275 299
|
||||
y(A)29 b(sequence)h(of)g(one)g(or)g(more)g(newlines)f(ma)m(y)h(app)s
|
||||
(ear)f(in)h(a)g Ft(list)e Fu(to)j(delimit)f(commands,)g(equiv-)150
|
||||
408 y(alen)m(t)i(to)f(a)g(semicolon.)275 548 y(If)c(a)h(command)f(is)h
|
||||
(terminated)g(b)m(y)g(the)g(con)m(trol)h(op)s(erator)f(`)p
|
||||
y(Of)23 b(these)h(list)g(op)s(erators,)i(`)p Ft(&&)p
|
||||
Fu(')d(and)g(`)p Ft(||)p Fu(')h(ha)m(v)m(e)h(equal)f(precedence,)i
|
||||
(follo)m(w)m(ed)f(b)m(y)f(`)p Ft(;)p Fu(')g(and)f(`)p
|
||||
Ft(&)p Fu(',)i(whic)m(h)150 408 y(ha)m(v)m(e)32 b(equal)e(precedence.)
|
||||
275 536 y(A)f(sequence)h(of)g(one)g(or)g(more)g(newlines)f(ma)m(y)h
|
||||
(app)s(ear)f(in)h(a)g Ft(list)e Fu(to)j(delimit)f(commands,)g(equiv-)
|
||||
150 646 y(alen)m(t)i(to)f(a)g(semicolon.)275 773 y(If)c(a)h(command)f
|
||||
(is)h(terminated)g(b)m(y)g(the)g(con)m(trol)h(op)s(erator)f(`)p
|
||||
Ft(&)p Fu(',)h(the)e(shell)h(executes)h(the)f(command)150
|
||||
658 y(async)m(hronously)g(in)h(a)g(subshell.)39 b(This)28
|
||||
883 y(async)m(hronously)g(in)h(a)g(subshell.)39 b(This)28
|
||||
b(is)h(kno)m(wn)f(as)h(executing)h(the)f(command)g(in)f(the)h
|
||||
Fr(bac)m(kground)p Fu(,)150 767 y(and)42 b(these)i(are)f(referred)g(to)
|
||||
Fr(bac)m(kground)p Fu(,)150 992 y(and)42 b(these)i(are)f(referred)g(to)
|
||||
g(as)h Fr(async)m(hronous)i Fu(commands.)78 b(The)43
|
||||
b(shell)g(do)s(es)g(not)g(w)m(ait)h(for)f(the)150 877
|
||||
b(shell)g(do)s(es)g(not)g(w)m(ait)h(for)f(the)150 1102
|
||||
y(command)34 b(to)h(\014nish,)f(and)f(the)h(return)f(status)i(is)f(0)g
|
||||
(\(true\).)53 b(When)34 b(job)g(con)m(trol)h(is)f(not)h(activ)m(e)h
|
||||
(\(see)150 986 y(Chapter)27 b(7)h([Job)f(Con)m(trol],)i(page)g(113\),)h
|
||||
(the)d(standard)g(input)f(for)i(async)m(hronous)f(commands,)h(in)f(the)
|
||||
150 1096 y(absence)k(of)f(an)m(y)h(explicit)h(redirections,)f(is)f
|
||||
(redirected)h(from)f Ft(/dev/null)p Fu(.)275 1236 y(Commands)19
|
||||
(\(see)150 1211 y(Chapter)27 b(7)h([Job)f(Con)m(trol],)i(page)g(113\),)
|
||||
h(the)d(standard)g(input)f(for)i(async)m(hronous)f(commands,)h(in)f
|
||||
(the)150 1321 y(absence)k(of)f(an)m(y)h(explicit)h(redirections,)f(is)f
|
||||
(redirected)h(from)f Ft(/dev/null)p Fu(.)275 1448 y(Commands)19
|
||||
b(separated)j(b)m(y)f(a)g(`)p Ft(;)p Fu(')g(are)h(executed)g(sequen)m
|
||||
(tially;)k(the)21 b(shell)g(w)m(aits)h(for)f(eac)m(h)h(command)150
|
||||
1345 y(to)31 b(terminate)h(in)e(turn.)39 b(The)30 b(return)f(status)i
|
||||
1558 y(to)31 b(terminate)h(in)e(turn.)39 b(The)30 b(return)f(status)i
|
||||
(is)f(the)h(exit)g(status)g(of)g(the)f(last)h(command)f(executed.)275
|
||||
1485 y Fm(and)g Fu(and)h Fm(or)g Fu(lists)h(are)g(sequences)f(of)h(one)
|
||||
1685 y Fm(and)g Fu(and)h Fm(or)g Fu(lists)h(are)g(sequences)f(of)h(one)
|
||||
g(or)f(more)h(pip)s(elines)e(separated)i(b)m(y)g(the)f(con)m(trol)i(op)
|
||||
s(er-)150 1594 y(ators)e(`)p Ft(&&)p Fu(')f(and)g(`)p
|
||||
s(er-)150 1795 y(ators)e(`)p Ft(&&)p Fu(')f(and)g(`)p
|
||||
Ft(||)p Fu(',)h(resp)s(ectiv)m(ely)-8 b(.)42 b Fm(and)30
|
||||
b Fu(and)f Fm(or)h Fu(lists)h(are)g(executed)g(with)f(left)h(asso)s
|
||||
(ciativit)m(y)-8 b(.)275 1734 y(An)30 b Fm(and)f Fu(list)i(has)f(the)h
|
||||
(form)390 1874 y Fj(command1)46 b Ft(&&)h Fj(command2)150
|
||||
2013 y Fr(command2)38 b Fu(is)30 b(executed)i(if,)e(and)g(only)g(if,)h
|
||||
(ciativit)m(y)-8 b(.)275 1923 y(An)30 b Fm(and)f Fu(list)i(has)f(the)h
|
||||
(form)390 2050 y Fj(command1)46 b Ft(&&)h Fj(command2)150
|
||||
2178 y Fr(command2)38 b Fu(is)30 b(executed)i(if,)e(and)g(only)g(if,)h
|
||||
Fr(command1)38 b Fu(returns)29 b(an)h(exit)h(status)g(of)g(zero)g
|
||||
(\(success\).)275 2153 y(An)f Fm(or)f Fu(list)i(has)f(the)h(form)390
|
||||
2293 y Fj(command1)46 b Ft(||)h Fj(command2)150 2432
|
||||
(\(success\).)275 2305 y(An)f Fm(or)f Fu(list)i(has)f(the)h(form)390
|
||||
2432 y Fj(command1)46 b Ft(||)h Fj(command2)150 2560
|
||||
y Fr(command2)38 b Fu(is)30 b(executed)i(if,)e(and)g(only)g(if,)h
|
||||
Fr(command1)38 b Fu(returns)29 b(a)i(non-zero)g(exit)g(status.)275
|
||||
2572 y(The)h(return)g(status)i(of)f Fm(and)f Fu(and)h
|
||||
2687 y(The)h(return)g(status)i(of)f Fm(and)f Fu(and)h
|
||||
Fm(or)f Fu(lists)i(is)f(the)g(exit)h(status)g(of)f(the)g(last)h
|
||||
(command)f(executed)150 2681 y(in)d(the)h(list.)150 2886
|
||||
y Fk(3.2.5)63 b(Comp)s(ound)42 b(Commands)150 3033 y
|
||||
(command)f(executed)150 2797 y(in)d(the)h(list.)150 2982
|
||||
y Fk(3.2.5)63 b(Comp)s(ound)42 b(Commands)150 3129 y
|
||||
Fu(Comp)s(ound)29 b(commands)h(are)i(the)f(shell)g(programming)f
|
||||
(language)j(constructs.)42 b(Eac)m(h)32 b(construct)f(b)s(e-)150
|
||||
3142 y(gins)25 b(with)f(a)i(reserv)m(ed)f(w)m(ord)f(or)h(con)m(trol)h
|
||||
3239 y(gins)25 b(with)f(a)i(reserv)m(ed)f(w)m(ord)f(or)h(con)m(trol)h
|
||||
(op)s(erator)f(and)g(is)g(terminated)g(b)m(y)g(a)g(corresp)s(onding)f
|
||||
(reserv)m(ed)150 3252 y(w)m(ord)i(or)g(op)s(erator.)40
|
||||
(reserv)m(ed)150 3348 y(w)m(ord)i(or)g(op)s(erator.)40
|
||||
b(An)m(y)26 b(redirections)g(\(see)i(Section)f(3.6)g([Redirections],)h
|
||||
(page)f(38\))h(asso)s(ciated)f(with)150 3361 y(a)k(comp)s(ound)f
|
||||
(page)f(38\))h(asso)s(ciated)f(with)150 3458 y(a)k(comp)s(ound)f
|
||||
(command)h(apply)f(to)i(all)g(commands)f(within)f(that)i(comp)s(ound)d
|
||||
(command)i(unless)f(ex-)150 3471 y(plicitly)i(o)m(v)m(erridden.)275
|
||||
3611 y(In)20 b(most)h(cases)g(a)g(list)h(of)f(commands)f(in)g(a)h(comp)
|
||||
(command)i(unless)f(ex-)150 3568 y(plicitly)i(o)m(v)m(erridden.)275
|
||||
3695 y(In)20 b(most)h(cases)g(a)g(list)h(of)f(commands)f(in)g(a)h(comp)
|
||||
s(ound)f(command's)g(description)h(ma)m(y)g(b)s(e)f(separated)150
|
||||
3720 y(from)30 b(the)h(rest)g(of)g(the)g(command)g(b)m(y)f(one)h(or)g
|
||||
3805 y(from)30 b(the)h(rest)g(of)g(the)g(command)g(b)m(y)f(one)h(or)g
|
||||
(more)g(newlines,)g(and)f(ma)m(y)i(b)s(e)e(follo)m(w)m(ed)i(b)m(y)f(a)g
|
||||
(newline)150 3830 y(in)f(place)h(of)g(a)g(semicolon.)275
|
||||
3969 y(Bash)45 b(pro)m(vides)h(lo)s(oping)g(constructs,)j(conditional)e
|
||||
(newline)150 3914 y(in)f(place)h(of)g(a)g(semicolon.)275
|
||||
4042 y(Bash)45 b(pro)m(vides)h(lo)s(oping)g(constructs,)j(conditional)e
|
||||
(commands,)j(and)44 b(mec)m(hanisms)i(to)g(group)150
|
||||
4079 y(commands)30 b(and)g(execute)i(them)e(as)g(a)h(unit.)150
|
||||
4283 y Fk(3.2.5.1)63 b(Lo)s(oping)43 b(Constructs)150
|
||||
4430 y Fu(Bash)31 b(supp)s(orts)d(the)j(follo)m(wing)g(lo)s(oping)g
|
||||
(constructs.)275 4570 y(Note)k(that)f(wherev)m(er)g(a)g(`)p
|
||||
4151 y(commands)30 b(and)g(execute)i(them)e(as)g(a)h(unit.)150
|
||||
4336 y Fk(3.2.5.1)63 b(Lo)s(oping)43 b(Constructs)150
|
||||
4483 y Fu(Bash)31 b(supp)s(orts)d(the)j(follo)m(wing)g(lo)s(oping)g
|
||||
(constructs.)275 4611 y(Note)k(that)f(wherev)m(er)g(a)g(`)p
|
||||
Ft(;)p Fu(')g(app)s(ears)f(in)h(the)g(description)g(of)g(a)g(command's)
|
||||
g(syn)m(tax,)i(it)e(ma)m(y)h(b)s(e)150 4680 y(replaced)c(with)f(one)h
|
||||
(or)f(more)g(newlines.)150 4847 y Ft(until)240 b Fu(The)30
|
||||
g(syn)m(tax,)i(it)e(ma)m(y)h(b)s(e)150 4720 y(replaced)c(with)f(one)h
|
||||
(or)f(more)g(newlines.)150 4866 y Ft(until)240 b Fu(The)30
|
||||
b(syn)m(tax)h(of)f(the)h Ft(until)e Fu(command)h(is:)870
|
||||
4984 y Ft(until)46 b Fj(test-commands)p Ft(;)e(do)j Fj
|
||||
4993 y Ft(until)46 b Fj(test-commands)p Ft(;)e(do)j Fj
|
||||
(consequent-commands)p Ft(;)c(done)630 5121 y Fu(Execute)f
|
||||
Fr(consequen)m(t-commands)k Fu(as)41 b(long)h(as)f Fr(test-commands)46
|
||||
b Fu(has)41 b(an)g(exit)h(status)630 5230 y(whic)m(h)c(is)h(not)g
|
||||
@@ -10791,17 +10792,18 @@ Ft(^)p Fu(')g(then)f(an)m(y)630 4655 y(c)m(haracter)c(not)f(enclosed)g
|
||||
(matc)m(hed)h(b)m(y)f(including)h(it)g(as)g(the)630 4765
|
||||
y(\014rst)32 b(or)h(last)h(c)m(haracter)h(in)e(the)g(set.)50
|
||||
b(A)33 b(`)p Ft(])p Fu(')g(ma)m(y)h(b)s(e)e(matc)m(hed)i(b)m(y)f
|
||||
(including)g(it)g(as)h(the)630 4875 y(\014rst)25 b(c)m(haracter)i(in)e
|
||||
(the)h(set.)40 b(The)25 b(sorting)h(order)f(of)h(c)m(haracters)h(in)f
|
||||
(range)g(expressions)f(is)630 4984 y(determined)h(b)m(y)h(the)g(curren)
|
||||
m(t)f(lo)s(cale)j(and)d(the)h(v)-5 b(alues)27 b(of)g(the)g
|
||||
Ft(LC_COLLATE)d Fu(and)i Ft(LC_ALL)630 5094 y Fu(shell)31
|
||||
b(v)-5 b(ariables,)31 b(if)f(set.)630 5230 y(F)-8 b(or)34
|
||||
b(example,)g(in)f(the)g(default)g(C)f(lo)s(cale,)k(`)p
|
||||
Ft([a-dx-z])p Fu(')31 b(is)i(equiv)-5 b(alen)m(t)34 b(to)g(`)p
|
||||
Ft([abcdxyz])p Fu('.)630 5340 y(Man)m(y)68 b(lo)s(cales)h(sort)f(c)m
|
||||
(haracters)h(in)e(dictionary)i(order,)76 b(and)67 b(in)g(these)h(lo)s
|
||||
(cales)p eop end
|
||||
(including)g(it)g(as)h(the)630 4875 y(\014rst)c(c)m(haracter)j(in)d
|
||||
(the)h(set.)43 b(The)31 b(sorting)g(order)g(of)g(c)m(haracters)h(in)f
|
||||
(range)g(expressions,)630 4984 y(and)f(the)h(c)m(haracters)h(included)e
|
||||
(in)h(the)f(range,)i(are)f(determined)f(b)m(y)h(the)g(curren)m(t)f(lo)s
|
||||
(cale)630 5094 y(and)g(the)g(v)-5 b(alues)31 b(of)g(the)f
|
||||
Ft(LC_COLLATE)e Fu(and)h Ft(LC_ALL)g Fu(shell)i(v)-5
|
||||
b(ariables,)31 b(if)f(set.)630 5230 y(F)-8 b(or)34 b(example,)g(in)f
|
||||
(the)g(default)g(C)f(lo)s(cale,)k(`)p Ft([a-dx-z])p Fu(')31
|
||||
b(is)i(equiv)-5 b(alen)m(t)34 b(to)g(`)p Ft([abcdxyz])p
|
||||
Fu('.)630 5340 y(Man)m(y)68 b(lo)s(cales)h(sort)f(c)m(haracters)h(in)e
|
||||
(dictionary)i(order,)76 b(and)67 b(in)g(these)h(lo)s(cales)p
|
||||
eop end
|
||||
%%Page: 37 43
|
||||
TeXDict begin 37 42 bop 150 -116 a Fu(Chapter)30 b(3:)41
|
||||
b(Basic)32 b(Shell)e(F)-8 b(eatures)2246 b(37)630 299
|
||||
|
||||
Reference in New Issue
Block a user