2017-06-14 08:56:21 +00:00
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# exec
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#
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# Shell builtin command
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2020-02-29 23:32:19 +00:00
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# It can start a new process to replace the shell, without a new process
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# creation. It can make redirections take effect in the current shell
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2017-06-14 08:56:21 +00:00
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2020-02-29 23:32:19 +00:00
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# Redirect all STDOUT from within a script to the given file.
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2017-06-14 08:56:21 +00:00
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exec > foo.log
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2020-02-29 23:32:19 +00:00
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# Redirect all of both STDOUT & STDERR from within a script to the given file.
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2017-06-14 08:56:21 +00:00
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exec > foo.log 2>&1
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2020-02-29 23:32:19 +00:00
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# Or, if on bash(1), this syntax is also viable:
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exec &> foo.log
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2017-06-14 08:56:21 +00:00
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2020-02-29 23:32:19 +00:00
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# Copy output to a log file, allowing the outputs to still work as usual.
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2017-06-14 08:56:21 +00:00
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exec > >(tee -ia foo.log)
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exec 2> >(tee -ia foo.log >&2)
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