Bash Exit Code Check
You probably want to return() but not exit() from your subroutine to allow the calling block to test the success or failure of a particular command. still relevant directly to this one, so leaving it, but sorry for the dupe. echo $? # Non-zero exit status returned -- command failed to execute. Usage step "Installing XFS filesystem tools:" try rpm -i xfsprogs-*.rpm next step "Configuring udev:" try cp *.rules /etc/udev/rules.d try udevtrigger next step "Adding rc.postsysinit hook:" try cp rc.postsysinit /etc/rc.d/ try ln http://thedroidblog.com/exit-code/bash-if-exit-code-not-0.html
Compiling multiple LaTeX files Are the guns on a fighter jet fixed or can they be aimed? and then running bunch of commands in a .sh script , how to stop the script if something fails? 0 How to check return value from a ninja parallel build? 0 Using exit codes in your bash scripts While removing the echo command from our sample script worked to provide an exit code, what happens when we want to perform one action Exit Codes With Special MeaningsTable E-1.
Bash Exit Code Check
Well-behaved UNIX commands, programs, and utilities return a 0 exit code upon successful completion, though there are some exceptions.Likewise, functions within a script and the script A similar standard for scripting might be appropriate. This variable will print the exit code of the last run command.
So I am going to change $command to $cmnd (the local variable.. –havexz Nov 23 '11 at 16:25 Thanks @havexz. share|improve this answer edited Mar 4 '11 at 16:19 answered Mar 4 '11 at 15:55 Dennis Williamson 175k45254316 3 If you want to mimic a try block even more closely, It seems like exit codes are easy for poeple to forget, but they are an incredibly important part of any script. Bash Set Exit Code Was the London Blitz accidentally started by lost pilots?
A few rebus puzzles What's the point of repeating an email address in "The Envelope" and the "The Header"? Bash If Exit Code Not 0 The author of this document will not do fixups on the scripting examples to conform to the changing standard. up vote 5 down vote No parentheses needed if the exit status is inspected: if valid_ip $IP ; then ... Reply ↓ CMS November 22, 2014 at 7:42 am Thanks!
It make cmnd and ret_code local to safeRunCommand use of ret_code is not necessary but a good practice to store return code in some variable (and store it ASAP) so that Last Exit Code Destiny valid_ip "$IP2" if [ $status1 -eq 0 ] || [ $? -eq 0 ]; then or if you need to distinguish between various non-zero statuses: valid_ip "$IP" case $? If the touch command fails however, we will print a failure message to stderr and exit with a 1 value which indicates failure. Running the C-shell or tcsh may give different values in some cases.