Populate Command Line with SED, from File

[jmarkus]

Okay, here's another "I know I can use sed, but I'm too green to know how" question:

I have a script which executes a command:
command -p/dir1 -p/dir2....-p/dirN $file

I have a file while lists dir1 to dirN called "job.lst":
/dir1
/dir2
...
/dirN

How do I use sed to read the job.lst file and insert -p/dirN for as many /dirN as there are?

Thanks,
Jeff

 

[PHV]

Try something like this:

pArgs=""
for dir in `cat job.lst`; do
  pArgs="$pArgs -p$dir"
done
command $pArgs $file

If you insist for using sed:

command `sed -e 's!^!-p!' job.lst` $file

Hope This Help, PH.
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