How do I remove all lines starting with "-CONFIG_" from a file ?

Glenn D. · 10-05-2010, 08:45 AM

Hello.
How do I remove all lines starting with "-CONFIG_" from a file ?
There are a 100 or so lines to remove for example see below.
Thanks Glenn

# /bin/cat .config.diff | grep -i "\-CONFIG\_" | tail
-CONFIG_VME_BUS=m
-CONFIG_VME_CA91CX42=m
-CONFIG_VME_TSI148=m
-CONFIG_VME_USER=m
-CONFIG_VMIVME_7805=m
-CONFIG_VT6655=m

druuna · 10-05-2010, 09:05 AM

Hi,

Something like this:

sed -i.bak '/-CONFIG_/d' infile

The -i switch changes in place an creates a back-up with the .bak extension.

Hope this helps.

kurumi · 10-05-2010, 09:07 AM

Code:

ruby -i.bak -ne 'print unless /^-CONFIG/' config.diff

David the H. · 10-05-2010, 09:20 AM

Code:

grep -v '^-CONFIG_' .config.diff > newfile
mv newfile .config.diff

vinaytp · 10-05-2010, 09:36 AM

Hi Glenn D,

Same using perl

Code:

 perl -ni -e  'print unless /^-CONFIG_/' cat.config.diff

Warm Regards,