Very Computer

I have a directory with 50 .c files.  I want to change "string1" in all
files to "string2".

Can anyone be kind to help me with a little script to do that?

I think one way is to write a "replace.sh" script.  Then sh replace.sh would
do it.

I know
cd dir
.
mv "string1" "string2"
.
but can't manage it all.

Thanks very much for your help.

George

Quote:> Hello,
> I have a directory with 50 .c files.  I want to change "string1" in all
> files to "string2".
> Can anyone be kind to help me with a little script to do that?
> I think one way is to write a "replace.sh" script.  Then sh replace.sh would
> do it.
> I know
> cd dir
> .
> mv "string1" "string2"
> .
> but can't manage it all.

sed -e 's/string1/string2/g' input_file > outputfile
mv output_file input_file

(DO NOT send sed's output directly into input_file but to a temporary
file and rename it afterwards, or you will be very unhappy!)

                                     HTH, Jens
--
      _  _____  _____

  _  | |  | |    | |          AG Moebius, Institut fuer Molekuelphysik
 | |_| |  | |    | |          Fachbereich Physik, Freie Universitaet Berlin
  \___/ens|_|homs|_|oerring   Tel: ++49 (0)30 838 - 53394 / FAX: - 56046

Quote:>Hello,

>I have a directory with 50 .c files.  I want to change "string1" in all
>files to "string2".

>Can anyone be kind to help me with a little script to do that?

>I think one way is to write a "replace.sh" script.  Then sh replace.sh would
>do it.

>I know
>cd dir
>.
>mv "string1" "string2"
>.
>but can't manage it all.

cd dir
perl -p -i.bak -e 's/string1/string2/' *

The original files will be renamed to filename.bak.

--

Genuity, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.

:) I have a directory with 50 .c files.  I want to change "string1" in all
:) files to "string2".
:)[snip]
:) mv "string1" "string2"

If string1 is in the files (as opposed to filenames), then this question
has been answered, if string1 is in the filenames you should use something
like:

ls -1 | grep string1 | sed 's/\(.*\)string1\(.*\)/mv \1string1\2 \1string2\2/'| sh

before you do this, however delete the last "| sh" of the command, and run
the command as it is, it should give you a list of commands of the form:

mv string1 string2

the |sh part will execute all of those rename commands, so make sure that
it will do its job correctly, before you execute the "|sh" part.

--
Eduardo
http://www.math.washington.edu/~chappa/pine/

#!/bin/sh
STRING1="this is string 1"
STRING2="this is its replacement"
for FN in *.c
do
  echo Processing $FN
  sed "s/$STRING1/$STRING2/g" $FN > /tmp/tmp.$FN
  mv $FN $FN.orig
  mv /tmp/tmp.$FN $FN
done

HTH!
-Bob
 Andover, MA

Quote:> Hello,

> I have a directory with 50 .c files.  I want to change "string1" in all
> files to "string2".

> Can anyone be kind to help me with a little script to do that?

> I think one way is to write a "replace.sh" script.  Then sh replace.sh
would
> do it.

> I know
> cd dir
> .
> mv "string1" "string2"
> .
> but can't manage it all.

> Thanks very much for your help.

> George

Thank you all very much.  You were too kind.

There were different ways to do it and I benefited from that.

I got the replacement done.  That was great!

Kind regards,

George