Need sed to uncomment fstab file lines.
 

Can somebody please give me an example of the sed code that could uncomment a drive mount line in fstab?

Is it a particular line you are interested in? Are there other commented mounts that you want to exclude? What does your fstab look like?

To remove all # in the file you could do this:

cat fileA | sed 's/#//g' > fileB; mv fileB fileA

If you want a more specific line uncommented, need more info.

There are two lines that need to be uncommented and a few others that need to stay commented.

The two that need uncommenting look like this:

#/dev/sde1 /vmware/tol ext3 nosuid 0 0
#/dev/sdf1 /vmware/sas ext3 nosuid 0 0

check out regular expressions and/or http://www.student.northpark.edu/pem...d/sed1line.txt

Nice link. Thanks, IR.

OK. How does this look?

sed 's/\(#\)\(/dev/sde1.*\)/\2/' /etc/fstab

sed 's/\(#\)\(/dev/sdf1.*\)/\2/' /etc/fstab

My shell responds with:
sed: command garbled: s/\(#\)\(/dev/sde1.*\)/\2/

You need to escape the / character... like this:

sed 's/\(#\)\(\/dev\/sde1.*\)/\2/' /etc/fstab
sed 's/\(#\)\(\/dev\/sdf1.*\)/\2/' /etc/fstab


The only difference is the sde vs sdf... regular expressions would allow you to process them with just one line. But if its a one time execution, save yourself the trouble.

You're welcome PoM... :) There is another one for Awk floating around somewhere.

It's really just a one time execution. Thanks for the help! One last thing.... would the -i switch be a good idea here? For instance:

sed -i 's/\(#\)\(\/dev\/sde1.*\)/\2/' /etc/fstab

It works without the -i. I would leave it as is.