UNIX for Dummies Questions & Answers

Hi,

I wrote a script, but it's not working. Please advise. I want to add the text at the end of the file. Should I use sed or awk. Not sure any thing is fine with me.

Code:

#!/usr/bin/ksh
DATE=`/usr/bin/date '+%m%d%y'` 
cp -p /etc/inittab /etc/inittab_$DATE
sed's/$/"hobbit:234:once:/etc/rc.hobbit start"/g' /etc/inittab

Thanks.

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if you want to add text to the end of a file why not use ">>" to do this?

Code:

echo "hobbit:234:once:/etc/rc.hobbit start" >> /etc/inittab

you want to add at the end of the file or the at the end of last line of the file??

This is what I did and it's working fine but curious to learn if I can do this in a different ways?

Code:

#!/usr/bin/ksh
DATE=`/usr/bin/date '+%m%d%y'` 
cp -p /etc/inittab /etc/inittab_$DATE
cat "hobbit:234:once:/etc/rc.hobbit start"  >>  /etc/inittab

Thanks.

as allways there are more than one way to do things in a script. the art is to know which is best for your case .
tools you should look at are maybe sed/ed/awk. but make sure to know the smaller and faster tools like grep/cut/>/>> and so on.