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Questions specific to GNU’s Bourne Again SHell, as opposed to other Bourne/POSIX shells. For questions about Unix shells in general, use the /shell tag instead. For shell scripts with errors/syntax errors, please check them with the shellcheck program (or in the web shellcheck server at https://shellcheck.net) before posting here.

41 votes
2 answers
54k views

File descriptors & shell scripting

/bin/bash exec 5 > /tmp/foo exec 6 < /tmp/bar cat <&6 | while read a do echo $a >&5 done As i understand &5 closes the fd, so how is the output still being re-directed successfully after each …
Ricko M's user avatar
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