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- ... is a variable holding the exit code of the last run command. -ne 0... checks that the thing on the left ($?) is "not equal" to "zero". In UNIX, a command that exits with zero succeeded, while an exit with any other value (1, 2, 3... up to 255) is a failure.Learn more:... is a variable holding the exit code of the last run command. -ne 0... checks that the thing on the left ($?) is "not equal" to "zero". In UNIX, a command that exits with zero succeeded, while an exit with any other value (1, 2, 3... up to 255) is a failure.stackoverflow.com/questions/20147964/what-does …@happy, yes, that's basically correct: $? -eq 0 means the last command exited with a status code of 0 (success). $? -ne 0 means the last command exited with a non-zero status code (usually due to an error).stackoverflow.com/questions/15471264/how-to-che…
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exit status - meaning of [ $? -ne '0' ]. (shell script) - Unix & Linux ...
WEB$? is the exit status (a string, but a representation of an integer) of the last command the shell waited for, that is, not put into the background with an & marker. A zero exit status traditionally means "success", which is different things for different programs.
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What does if [ [ $? -ne 0 ]]; mean in .ksh - Stack Overflow
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WEBif [$? -ne 0] I understand ne is not equal to zero but how abt $? Also, what does exit 1 or exit 0 mean.
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Using $? in an if statement - Unix & Linux Stack Exchange
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what does if[$? -ne 0] mean in unix - The UNIX and Linux Forums
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if [ $? -ne 0 ] then syntax error then unexpected - Stack Overflow
WEBI have been trying to execute the following UNIX shell script which is not working. I am running it by KornShell (ksh). echo $?; if [ $? -ne 0 ] then failed $LINENO-2 $5 $6 fi …
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Check if bash variable equals 0 - Stack Overflow
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What does "$?" give us exactly in a shell script? [duplicate]
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shell - I received error "bash: line 1: [: -ne: unary operator …
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