return code to continue script or quit script and email

robertkwild · 04-15-2016, 04:39 AM

hi all,

i have made a script and it works well just i want to add to it

rsync -a "${fSaveDir}".tar /archived_projects/

new code goes here

rm -f "${fSaveDir}".tar

inbetween these two lines of code i want it to either continue the script if the last command returned a code 0 (aka successful) but if it returns any over number, quit the script and email

i know this is possible but i dont know how to implement it

sorry

thanks

rob

wpeckham · 04-15-2016, 05:19 AM

Two things you may want to look up:
1. 'if' can be used to execute blocks of code depending upon the code return from a command, ie

Code:

if rsync command
then
   dostuff
else
   do other stuff
fi

works.
2. the environment is loaded with a value of the code return from the last run command. You can use this to test and run conditional code after the command exits. You will find this documented in your shell man pages.

You should be able to google for bash tricks and find both of these mentioned on the internet.

cnamejj · 04-16-2016, 08:31 PM

You can also add a check like this if you want.

Code:

if [ $? -ne 0 ]
then
   ...whatever you want to do after an error...
fi