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Chet Ramey
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# test effect of assigning to readonly vars on loops and non-interactive shells
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# fatal error when in posix mode
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var=foo
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readonly var
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for num in 1 2 3 4 5; do
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if [ $num -eq 3 ]; then
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var=bar
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fi
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echo $num
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done
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echo after readonly assignment
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# can't have the variable in a for command be readonly
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for var in 1 2 3 4 5; do echo $var; done
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# but in posix mode these are fatal errors
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(set -o posix
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for f in 1 2 3 4; do readonly f; done ; echo after for readonly assignment)
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(set -o posix
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for var in 1 2 3 4; do echo $var; done; echo after posix for readonly variable)
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# same with select
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select var in 1 2 3; do echo $REPLY; done <<<1
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(set -o posix
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select var in 1 2 3; do echo $REPLY; done <<<1 ; echo after posix select readonly variable)
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# non-numeric arguments to break are fatal errors for all non-interactive shells
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for f in 1 2 3 4 5
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do
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break x
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done
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echo after loop
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