Bash Question
Bash Restrict parent script command line arguments carry forward to child scripts arguments
We have parent bash script
parent_source.bash
#!/bin/bash
source child_test.bash
Inside the child_test.bash
echo $@
#Doing some validation checks for $@, for child_script command line arguments are optional
Where as when executing
source parent_source.bash one two
The child script is taking "one" and "two" in the $@ so validation is failing, It is not considering as zero arguments given to child script. Child script assuming it got 2 command line arguments.
But if we give command line args for child also It is working fine.
Could Someone please help us
Thanks
Answer
When executing the source command, you actually injecting the content of child_test.bash to your parent_source.bash script, and then, when the first line in the child_test.bash is being executed, ie:
echo $@
It actually refers to the arguments passed to the parent script since the scope of the command is actually on the parent_source.bash script.
I suggest to execute the script without injecting the content to the parent script.
Something like this:
parent_source.bash:
#!/bin/bash
./child_test.bash
child_test.bash:
echo $@
#Doing some validation checks for $@, for child_script command line arguments are optional
Source (Stackoverflow)