Bash Get Return Code From

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Dec 22 2010 nbsp 0183 32 command one amp amp command two the intent is to execute the command that follows the amp amp only if the first command is successful This is idiomatic of Posix shells and not only found in Bash It intends to prevent the running of the second process if the first fails You may notice I ve used the word quot intent quot that s for good reason Feb 10, 2010 · How do I compare a variable to a string (and do something if they match)?

Srs http

SRS Http

Bash Get Return Code From Modern shells such as Bash and Zsh have inherited this construct from Ksh, but it is not part of the POSIX specification. If you're in an environment where you have to be strictly POSIX compliant, stay away from it; otherwise, it's basically down to personal preference. Sep 14 2012 nbsp 0183 32 In Bash there appear to be several variables which hold special consistently meaning values For instance myprogram amp amp echo will return the PID of the process which backgrounded myprog