Run command line with named arguments from another bash script

Question

I have one script that takes the name of argument and its value, like this:

script1.sh --netId netIdValue

However, I'd like to call this command multiple times in another script, for the different values of netId argument. So, in script2.sh I want to read the values of netIdValue from the .txt file and then to call the same command, like this:

while IFS= read -r line; do
    netIdValue=$line
    ./script1.sh --netId $netIdValue
done < netNames.txt

But, this fails, and it seem the problem is that it does not take --netId properly. How can I pass the argument name and its value in script2.sh?

Do you really have IFS- or is that a typo? You want IFS= — glenn jackman
– glenn jackman, Commented Sep 7, 2022 at 15:04
(1) Run your script with bash -x yourscript and read the trace logs emitted (and edit them into the question). (2) Include the error message in your question; let us evaluate what it "seems". (3) Glenn's comment above is almost certainly your problem. — Charles Duffy
– Charles Duffy, Commented Sep 7, 2022 at 15:51
It won't help your problem here, btw, but --netId "$netIdValue" is how the above code should be quoted. — Charles Duffy
– Charles Duffy, Commented Sep 7, 2022 at 15:52
(also, why use a line variable instead of read -r netIdValue to put the value directly into the name you want?) — Charles Duffy
– Charles Duffy, Commented Sep 7, 2022 at 16:33

James Risner · Accepted Answer · 2022-09-13 19:04:04Z

1

My script1.sh is:

#!/bin/sh
echo "$1" "$2" - "$#"

If your ID's are in a file one per line, do this:

% cat file
1
2
% cat file | \
    xargs -I {} ./script1.sh --netId {}
--netId 1 - 2
--netId 2 - 2

If your ID's are on one line separated by spaces, do this:

% cat file
1 2
% cat file | tr ' ' '\0' | \
    xargs -0 -I {} ./script1.sh --netId {}
--netId 1 - 2
--netId 2 - 2

For the separation, I'm using tr to translate the spaces to null (\0) and using xargs -0 option to separate inputs by nulls.

answered Sep 13, 2022 at 19:04

James Risner

6,09711 gold badges33 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Run command line with named arguments from another bash script

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related