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Old 01-26-2009, 06:06 PM   #1
djeikyb
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Registered: Nov 2005
Location: California
Distribution: ubuntu 10
Posts: 162

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Grepping and testing for comments


I'm trying to have my script read through a file and run function foo on lines that don't start with a "#". So for a file containing:
Code:
# vegetables
squash:squash
tomato:tomatoes

# fruit
apple:apples
papaya:papaya
and a script:
Code:
  1 #!/bin/bash
  2
  3 amount=$1
  4 measure=$2
  5
  6 while read line
  7 do
  8         a=`echo "$line" | egrep "^#"`
  9         #echo $a
 10         if [ -z $a ]; then null=
 11         else echo $a; fi
 12 done < ./ingredients
I get output:
Code:
./sample-measure-conversion: line 10: [: #: binary operator expected
# vegetables
./sample-measure-conversion: line 10: [: #: binary operator expected
# fruit
Any ideas what's up?
 
Old 01-26-2009, 06:20 PM   #2
alan_ri
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Registered: Dec 2007
Location: Croatia
Distribution: Debian GNU/Linux
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Try to put quotes in line 10,like this;
Code:
10         if [ -z "$a" ]; then null=

Last edited by alan_ri; 01-26-2009 at 06:22 PM.
 
Old 01-26-2009, 07:48 PM   #3
norobro
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Registered: Feb 2006
Distribution: Debian Sid
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deleted

Last edited by norobro; 01-26-2009 at 08:52 PM. Reason: misread first line in OP
 
Old 01-27-2009, 02:21 AM   #4
djeikyb
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Registered: Nov 2005
Location: California
Distribution: ubuntu 10
Posts: 162

Original Poster
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That works, thanks!
 
  


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