Difference between revisions of "Removing Comments and Blank lines of a config file"
Jump to navigation
Jump to search
| Line 6: | Line 6: | ||
Using 'grep' and 'sed' we can strip out comments and blank lines of any file. you can then redirect the output to a file if you so wish. In this example I will use it to remove the comments and blank lines from my apache2.conf file | Using 'grep' and 'sed' we can strip out comments and blank lines of any file. you can then redirect the output to a file if you so wish. In this example I will use it to remove the comments and blank lines from my apache2.conf file | ||
| − | + | <syntaxhighlight lang="bash"> | |
| + | grep -v "#" /etc/apache2/apache2.conf | sed -e '/^$/d' | ||
| + | </syntaxhighlight> | ||
If you wish to leave the blank lines then simply omit the sed statement. | If you wish to leave the blank lines then simply omit the sed statement. | ||
| Line 12: | Line 14: | ||
Alternatively you can use egrep | Alternatively you can use egrep | ||
| − | + | <syntaxhighlight lang="bash"> | |
| + | egrep -v '(#|^\s*$)' | ||
| + | </syntaxhighlight> | ||
With both options you can of course redirect output to a new file. The default is stdout | With both options you can of course redirect output to a new file. The default is stdout | ||
| − | |||
| − | |||
[[Category:Linux| ]] [[Category:Unix| ]] | [[Category:Linux| ]] [[Category:Unix| ]] | ||
Revision as of 10:59, 27 February 2017
Remove blank lines and comments from a config file
Using 'grep' and 'sed' we can strip out comments and blank lines of any file. you can then redirect the output to a file if you so wish. In this example I will use it to remove the comments and blank lines from my apache2.conf file
grep -v "#" /etc/apache2/apache2.conf | sed -e '/^$/d'
If you wish to leave the blank lines then simply omit the sed statement.
Alternatively you can use egrep
egrep -v '(#|^\s*$)'
With both options you can of course redirect output to a new file. The default is stdout
