How to extract partial input filename to name output file

Question

I have a bash script (script.sh) that acts on a file called 12345.txt that currently produces an output file named "12345.txt_output":

Command line:

bash script.sh 12345.txt

Last line of script.sh:

> "${1}_output"

How do I change the output command (while still using $1) to name the file 12345_output (instead of 12345.txt_output)?

karakfa · Accepted Answer · 2017-03-26 22:15:09Z

1

bash string functions

> "${1%.*}_output"

answered Mar 26, 2017 at 22:15

karakfa

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1 Comment

karakfa to the rescue!