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
Recommended for you: Get network issues from WhatsUp Gold. Not end users.
Answer Source
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
Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download