added exec
parent
c8996cda79
commit
2ad293df0d
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sh
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bash
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zsh
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exec
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# exec
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#
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# Shell builtin command
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# It can start a new process to replace the shell, without a new process creation.
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# It can make redirections take effect in the current shell
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# Redirect the output of an entire shell script within the script itself
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# Only stdout:
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exec > foo.log
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# Redirect the output of an entire shell script within the script itself
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# Stdout and stderr:
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exec > foo.log 2>&1
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# Copy output to a log file
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exec > >(tee -ia foo.log)
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exec 2> >(tee -ia foo.log >&2)
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