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

edit script

Peter Gillis — Thu, 06 Jul 2006 00:46:27 GMT

Hi ... ux 11.11v1 op sys, posix sh.
I need to change a heap of lines in a heap of scripts the changes are directory names.
eg /opt/CA/sche needs to change to /opt/CA/Umja/sche
I seeem to remember there is a way to make changes like this relatively quickly. Does anyone know of a way?

pleanty points around
thanks Maria

Re: edit script

Steven E. Protter — Thu, 06 Jul 2006 00:54:57 GMT

Shalom Maria,

The tool of choice is sed.

Here is some sample code.

The essense the sed s/search/replacewith/g command.

So create a file list with fill path. Put it in a file called /tmp/filelist

while read -r $filename
do

sed s/juf.org/juf.net/g ${filename} > ${filename}.bck"
mv ${filename}.bck ${filename}

done < /tmp/filelist

Please test this out before using it in production. The slashes will require a slight upgrade of my basic code.

SEP

Re: edit script

RAC_1 — Thu, 06 Jul 2006 00:56:51 GMT

Backup all scripts that are to be changed.

sed 's/\opt\/CA\/sche/\/opt\/CA\/Umja\/sche/g' your_scripts

Re: edit script

H.Merijn Brand (procura — Thu, 06 Jul 2006 01:24:43 GMT

perl supports in-line change

# perl -li -e's{/opt/CA/sche\b}{/opt/CA/Umja/sche}g' all the files you want changed

Or, if you want to change all *files* recursively from a folder/directory

# find dir -type f | xargs perl -li -e's{/opt/CA/sche\b}{/opt/CA/Umja/sche}g'

Enjoy, Have FUN! H.Merijn

Re: edit script

Peter Gillis — Thu, 06 Jul 2006 02:10:25 GMT

RAC procure...do either of your methods actually change all mention of /opt/CA/sche
to /opt/CA/sche/UM inside all the files in the directory, including if the path name has further directories added on to it?
I am an absolute novice with perl and sed. (that's probably the most helpful piece of info I can give you!)
thanks
Maria.

Re: edit script

H.Merijn Brand (procura — Thu, 06 Jul 2006 02:33:32 GMT

In this case, perl is just like sed and awk, it's only capable to in-line change the files, so you do not need temproray files

If you only need to change files in one single dir, and not in subdirs,

# cd that_dir
# perl -li -e's{/opt/CA/sche\b}{/opt/CA/Umja/sche}g' *

will change all files for you. All occurannces.

Enjoy, Have FUN! H.Merijn

Re: edit script

Peter Gillis — Thu, 06 Jul 2006 08:57:37 GMT

Hi,
I have not been able to get result with the perl command..but with the sed command - I been testing on one file only - I issue the command and the actual script that I want the changes to take place in, scrolls past with the necesary test changes. But, then, I issue the more command to view slowly the entire contents of the file and there are NO changes !! What is happening? do you know?
thyanks
Maria

Re: edit script

Mel Burslan — Thu, 06 Jul 2006 09:12:17 GMT

Maria,

sed command itself does not make the changes to the original file. When you run it, it gives you the changed output to the stdout which is your terminal.

assuming you are using RAC's one-liner sed command, you can do this:

cd /my/scripts/directory
for script in `ls`
do
cat ${script} | sed 's/\opt\/CA\/sche/\/opt\/CA\/Umja\/sche/g' > ${script}.new
done

this will generate a new file with .new appended to the original filename in the same directory, which will be the modified version.

Hope this helps

Re: edit script

spex — Thu, 06 Jul 2006 09:13:31 GMT

Maria,

It sounds as though you're not redirecting the output from sed to a file, so it's being displayed on stdout. Make sure to use this syntax:

sed s/juf.org/juf.net/g file_in > file_out

Then 'more file_out'.

PCS

Re: edit script

Marvin Strong — Thu, 06 Jul 2006 09:33:25 GMT

Re: edit script

Marvin Strong — Thu, 06 Jul 2006 09:39:37 GMT

oh btw that would be ran from the directory with all the files you want to change. hopefully that was obvious.

Re: edit script

H.Merijn Brand (procura — Thu, 06 Jul 2006 09:49:46 GMT

Sorry for the confusion caused by my typoes!

perl -li -e

is wrong

perl -pi -e

is correct.

Enjoy, Have FUN! H.Merijn

Re: edit script

Peter Gillis — Thu, 06 Jul 2006 10:50:00 GMT

Thankyou everyone!!!
Mel, I used your method and it worked well for me. The only thing I altered was number of slashes in the command:
sed 's/\opt\/CA\/sche/\opt\/CA\/UnicenterUUJMA\/sche/g' maria
I have learnt plenty tonight, thankyou.
Maria