help required in scripting

[dayananda.ms]

Hi ...

I am having a lot of .c files in my current directory. Now i have add some comments to the starting of all files like Name, Author, copyright, etc...
So instead of editing each file, i am planning to write a shell script. Can anybody help me in that.

[burschik]

You could use something like

sed -i '1i\my text goes here' *.c

[dayananda.ms]

Hi...
i gave
sed -i 'li\Name:raja' *.c
but i am getting error like this.

# sed: -e expression #1, char 2: extra characters after command

[drl]

Hi.

That should be a "1" (one), not an "l" (ell) in

'li\Name:raja'

However, to insert a number of lines, perhaps a "read" would be more suitable:

#!/bin/bash -

# @(#) s4       Demonstrate insertion of file after line number.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version "=o" $(_eat $0 $1) sed
set -o nounset
echo

echo " Main data file file1:"
cat file1

echo
echo " File of text to be inserted at line 1:"
cat file2

echo
echo " Results, sed insert after line 1 (one):"

sed "1r file2" file1

exit 0

Producing:

% ./s4

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash 2.05b.0
GNU sed version 4.1.2

 Main data file file1:
one
two
three
four

 File of text to be inserted at line 1:
        first
        second
        third
        fourth
        fifth

 Results, sed insert after line 1 (one):
one
        first
        second
        third
        fourth
        fifth
two
three
four

The sed command is not trivial to learn (especially from the man page), but can be very useful once you get used to it. See a tutorial like: Sed - An Introduction and Tutorial to get started learning ... cheers, drl

[dayananda.ms]

Hi...

Thanks...