sed and a script file (-f script_file)

[Stephen Badgett]

I would like to use sed and "-f script_file" or " -e script"

I am currently using sed to do changes and like using it but since I have a lot of changes that are needed I thought of using
a -f or the -e option.

small sample:

sed "s/Cap: /CAPACITY /" old.sch > new.sch
sed "s/Trial /TRIAL /" new.sch > new1.sch


Steve

[Sridhar Bhaskarla · Accepted solution]

Hi Steve,

I would put the sed commands in a file say infile like this

s/Cap:/CAPACITY/
s/Trial/TRIAL/

and run sed as

sed -f infile old.sch > new.sch

-Sri

[A. Clay Stephenson]

Sounds like a plan. Simply combine each of your instructions in a single file and use the -f option to identify your script file. This will be much more efficient than applying one rule at a time. Be aware that the commands are processed sequentially so that, for example, if you have an instruction
that substitues "cat" for "dog" and a subsequent instruction that substitutes "cow" for "cat" then all of your dogs as well as your cats will become cows whether that was your intention or not.