Re: add a character to a line...

On 2006-04-27, onlineviewer <lancerset@xxxxxxxxx> wrote:
Hello,

How do you add a word or a character to the beginning of a line in a
file? I want to add a comment '#' where the string 'var' appears in a
file, globally. Like:

#### before:
bla
Var
bla

#### after:
bla
#Var
bla

Thanks,,,


To change the file directly, you can use ed (or ex):

# On every line where var or Var occurs as a word (e.g., exclude
# "variety"), add '#' to the beginning of the line:
echo 'g/\<[vV]ar\>/s/^/#/
wq'|ed file

It's easy to put this in a for loop to process several files.

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