Add 5 lines of code to all the scripts in a directory

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# 1  
Old 09-18-2009
Add 5 lines of code to all the scripts in a directory

Hi Guys,
I need some tips on writing a Korn shell script that would look for certain lines of code and replace all the scripts in the directory with a few other lines. I have about 120 scripts that I need to modify.

Any suggestions would be appreciated!

# 2  
Old 09-18-2009
I dont have knowledge in Korn Shell Scripts.

But i believe you would find sed fit for it. After testing use the -i switch of it to make the changes in that file.
# 3  
Old 09-18-2009
Are you are doing one-line-for-one-line replacements? That is, are you replacing something like
cd $HOME/old
cd $HOME/new
# 4  
Old 09-18-2009
Hi Ken,
No, I want to replace 1 line with about 5 lines of code. Those 5 lines of code include an if loop.

Please let me know if you need any other information.

# 5  
Old 09-18-2009
If you want to use sed, something like this will work.

It looks for the first line containing the word 'special' and replaces the whole line with a five-line 'if' statement.

Of course, I'm using GNU sed, which recognizes the -i switch. Not all versions of sed do. And I'm not sure all seds recognize the \n sequence.
cd script-directory
for f in *; do
    test ! -x "$f"  &&  continue
    sed -i '/special/ s/^.*$/if \[ "$a" = 1 \]; then\necho "1"\necho "2"\necho "3"\nfi/;q' "$f"

# 6  
Old 09-21-2009
Thanks Ken!

I haven't tried the solution yet. I would like to look into sed's syntax and interpret what you did.

I will let you know if I have any questions.

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