bash_notes
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bash_notes [2022/11/08 20:28] – [documentation links] raju | bash_notes [2022/11/08 20:40] – [what is the difference between "ls > dirlist 2>&1" and "ls 2>&1 > dirlist"?] raju | ||
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==== what is the difference between "ls > dirlist 2>& | ==== what is the difference between "ls > dirlist 2>& | ||
+ | The command | ||
+ | < | ||
+ | ls > dirlist 2>&1 | ||
+ | </ | ||
+ | directs both standard output (file descriptor 1) and standard error (file descriptor 2) to the file dirlist, while the command | ||
+ | < | ||
+ | ls 2>&1 > dirlist | ||
+ | </ | ||
+ | directs only the standard output to file dirlist, because the standard error was made a copy of the standard output before the standard output was redirected to dirlist. | ||
+ | |||
+ | To conclude, the order of redirections is significant. | ||
+ | |||
+ | Ref:- https:// | ||
===== getopts ===== | ===== getopts ===== |
bash_notes.txt · Last modified: 2023/12/28 08:49 by raju