inserting into a data file - UNIX for Dummies Questions & Answers

paul1s · #1 (**permalink**) 10-12-2006

Hello

I have a unix variable $HDR in a script, which contains header info, and I need to create it as a new line at the top of a data file which is the input $1 in the script.

Paul

ripat · #2 (**permalink**) 10-12-2006

Have a look to this thread:
adding text to a file between lines

anbu23 · #3 (**permalink**) 10-12-2006

Code:

sed "1 i\
$HDR" $1 >temp
mv temp $1

Glenn Arndt · #4 (**permalink**) 10-12-2006

Sedless version:

Code:

{
  print "$HDR"
  cat $1
} > $1.tmp
mv $1.tmp $1

paul1s · #5 (**permalink**) 10-12-2006

Thank you both methods work OK

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