Evaluate perl output in if statement

Asked May 23 '17 at 12:08

Active May 23 '17 at 12:08

Viewed 22 times

I would like to evaluate the output of a Perl script run in a bash for loop.

My Perl script get_contigs.pl outputs a single number, and I would like to delete or keep a file depending on this number. I'm trying to do this inside of an if statement as follows:

if [ $(perl get_contigs.pl file.txt) < 130 ]
  then
  rm file.txt
  fi

But it exits with the error -bash: 130: No such file or directory

When I run this script outside of the loop: perl get_contigs.pl file.txt

I get the expected output. (In this particular case the output is 110 - so I want to remove this file).

What am I doing wrong?

asked May 23 '17 at 12:08

fugu

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2

To compare numbers within `[ ]`, use `-eq`, `-lt`, etc. `<` in Bash has another meaning (to read from a file, for example). – fedorqui May 23 '17 at 12:11
1

@fedorqui "Face, meet palm" – fugu May 23 '17 at 12:15

Evaluate perl output in if statement

0 Answers0