Returning Value From Called Function In A Shell Script
A Bash function can t return a string directly like you want it to You can do three things Echo a string Return an exit status which is a number not a string Share a variable This is also true for some other shells Here s
How To Get Test Command Return Code In The Shell , The answer above checks for the return value and not the returned text of the command You can see this by typing in ls l dirDoesNotExist amp amp echo quot ok quot echo quot not ok quot and you will receive the quot not ok quot response
Reading The Return Value status Of A Command Linux Shell
The return value of a command is stored in the variable cmd echo The return value is called exit status This value can be used to determine whether a command completed successfully or unsuccessfully If the command exits successfully the exit status will be zero otherwise it will be a nonzero value The following script reports the
Running Shell Command And Capturing The Output Stack Overflow, If you want to capture both stdout and stderr and display them as they would appear when a shell command is executed in a interactive terminal and you needed to know the return status of the command you can do a following hack import time os cmd str quot ls d bin nonsense quot tmpfile quot tmp results quot str os getpid quot quot
Shell Evaluating The Return Value Of A Command Line Unix
Shell Evaluating The Return Value Of A Command Line Unix, I think you are mixing two things the return value typically indicates if a command was successful return value 0 or not anything else You can get the return value of a command from the variable grep c returns the count to stdout to capture the count you can use something like variable grep c pattern filename
Linux Command Execution Bypass
How To Use Linux Shell Command Exit Codes Enable Sysadmin
How To Use Linux Shell Command Exit Codes Enable Sysadmin When you execute a command in Linux it generates a numeric return code This happens whether you re running the command directly from the shell from a script or even from an Ansible playbook You can use those return codes to handle the result of that command properly
Shell
Perhaps you didn t mean to use exec and simply want to run the command and wait for it to complete gosu user var www bin phpunit c app ret code if ret code 0 then exit 0 fi printf Error in execing gosu d n ret code exit ret code Bash Get Return Value Of A Command And Exit With This Value. 4 Answers Sorted by 16 choroba s answer is correct however this example might be clearer valNum num valNumResult is the return value of the previous command if valNumResult eq 1 then do something fi You are mixing up output versus return value of a function I show you minimal working examples so you can see your mistake Either do a return myfunc return 1 myfunc ret ret eq 0 amp amp echo OK or write to stdout and check the output myfunc echo 1 ret quot myfunc quot quot ret quot 0 amp amp echo OK
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