作者：曾经 | 来源：互联网 | 2024-11-06 16:46
We need a containers.exited.tmp file because if you put the source-file as the output-file the resul
We need a containers.exited.tmp file because if you put the source-file as the output-file the result will (depending on bash?) be an empty file.
Bad:
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| bash
$cat containers.exited
123
456
789
$ cat containers.dead
789
$ comm -23 containers.exited containers.dead > containers.exited
$ cat containers.exited
(empty file) |
Good:
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| $comm -23 containers.exited containers.dead > containers.exited_tmp
$cat containers.exited_tmp
123
456 |
该提问来源于开源项目：spotify/docker-gc
ah I missed that the command is trying to redirect to the same file that
is reading from. Thanks for catching this!
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