Replace a character within a shell script

Question

I have a script:

$cat ifile.sh
extension="name.f"
parameter_list="abc,xyz,stuv,ptq,rhu"
echo newfiles are $parameter_list

I would like to execute the ifile.sh and output should replace the comma , with extension i.e. _name.f. So my desire output will be

$sh ifile.sh
newfiles are abc_name.f xyz_name.f stuv_name.f ptq_name.f rhu_name.f

So I need to modify the echo newfiles are $parameter_list. I am trying with the follwoing

$cat ifile.sh
extension="name.f"
parameter_list="abc,xyz,stuv,ptq,rhu"
echo newfiles are sed -i 's/,/$extension/g' $parameter_list

oguz ismail · Accepted Answer · 2020-03-27 16:57:45Z

1

Use a parameter expansion.

echo "newfiles are ${parameter_list//,/_$extension }_$extension"

answered Mar 27, 2020 at 16:50

oguz ismail

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