Sed/Exit-status
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2.3 Exit status
An exit status of zero indicates success, and a nonzero value
indicates failure. GNU sed
returns the following exit status
error values:
- 0
- Successful completion.
- 1
- Invalid command, invalid syntax, invalid regular expression or a GNU
sed
extension command used with--posix
. - 2
- One or more of the input file specified on the command line could not be opened (e.g. if a file is not found, or read permission is denied). Processing continued with other files.
- 4
- An I/O error, or a serious processing error during runtime, GNU
sed
aborted immediately.
Additionally, the commands q
and Q
can be used to terminate
sed
with a custom exit code value (this is a GNU sed
extension):
$ echo | sed 'Q42' ; echo $? 42