topic Re: script help in Operating System - HP-UX

script help

Michael_33 — Thu, 16 Jan 2003 01:11:24 GMT

Hi all,

There are many .txt files in /usr directory,
each file has a line with this content: 1992-2002, I want to change it to 1992-2003 by one time, how should I do? thanks.

Re: script help

Wilfred Chau_1 — Thu, 16 Jan 2003 01:26:33 GMT

either vi each file, then
type ":0,$s/1992-2002/1992-2003/g

or

cp a.txt a.txt.save
sed -e "s/1992-2002/1992-2003/" a.txt.save > a.txt

Re: script help

Jeff Schussele — Thu, 16 Jan 2003 01:27:53 GMT

Hi Michael,

Assuming all .txt files in the dir need the change you can use the following sed script

for x in `ls /usr/*.txt`
>do
>sed 's/"1992-2002"/"1992-2003"/g' $x > $x.new
>done

The g (global) is required to catch all instances in the file. Without it only the first occurence gets the change

If you don't wish to keep the old copies add this after the sed command
>mv $x.new $x

HTH,
Jeff

Re: script help

S.K. Chan — Thu, 16 Jan 2003 01:30:34 GMT

Assumption made .. all of your text files are in /usr level.
# cd /usr
# for i in $(ls *.txt)
> do
> sed 's/1992-2002/1992-2003/g' $i > $i.new
> mv $i.new $i
> done
#
That should do it. Test it first by copying a few *.txt files in /tmp and run it from there.

Re: script help

Michael_33 — Thu, 16 Jan 2003 01:40:11 GMT

thanks all!

Re: script help

H.Merijn Brand (procura — Thu, 16 Jan 2003 10:34:35 GMT

Just for the record, perl can do it in a single op with in-file editing:

# perl -pi -e's/1992-2002/1992-2003/g' *.txt