01-26-2008
better use perl search and replace.
Quote:
perl -i -pe 's/old pattern/new pattern/g' filename
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hey
how can i change part of a file
i hve to do in a masses so mv or cp is not practical.
I have to change xxx_rrr to xxx_yyy
pls help
thank (2 Replies)
Discussion started by: ajaya
2 Replies
2. Shell Programming and Scripting
I was using the following code to replace the path names and it works when it is
echo "$PWD/$f" | sed -e 's/^.*chris\.domain\.com/chris.domain.com/'
IN fact it works great
However I tried to incorporate a variable
echo "$PWD/$f" | sed -e... (3 Replies)
Discussion started by: chrchcol
3 Replies
3. Shell Programming and Scripting
Input file - tmp
<begin>
./00003/
./00004/
<end>
I would like to replace "." with the value of pwd
so that the output will look like
/dev/project/00003/
t=`pwd`
sed -e "s/\./$t/g" tmp > tmp1;
The above piece of code is not working. Appreciate your help. (4 Replies)
Discussion started by: lotto_123
4 Replies
4. Shell Programming and Scripting
Hi Guys,
I am needing some help writing a shell script to replace the following in a text file
/opt/was/apps/was61
with some other path eg
/usr/blan/blah/blah.
I know that i can do it using sed or perl but just having difficulty writing the escape characters for it
All Help... (3 Replies)
Discussion started by: cgilchrist
3 Replies
5. Shell Programming and Scripting
Hi all, I want to perform different operations on text like converting string to lower, converting to upper, extract string etc.
can anyone suggest me shell commands for these?
is it possible to take input with read command and then applying perl commands for string manipulation?
Help me. (3 Replies)
Discussion started by: admc123
3 Replies
6. Shell Programming and Scripting
ok, so i have the following text to replace but it's not working. can someone please help me out:
:%s~awk '// {split($2,s,",");a=$1 FS s} /-/ {b=a} END{print b}'~tail -1~g
I want to replace the entire awk command with tail -1.
thanks (7 Replies)
Discussion started by: SkySmart
7 Replies
7. Shell Programming and Scripting
I have file like this
"copy table_name from filea.txt on node replace delimiter '|';"
"copy table_name from fileb.txt on node replace delimiter '|';"
"copy table_name from filec.txt on node replace delimiter'|';"
"copy table_name from filee.txt on node replace delimiter '|';"
"copy... (1 Reply)
Discussion started by: nnani
1 Replies
8. Shell Programming and Scripting
I would like to replace ], with ]]], between /* SECTION2-BEGIN */ and /* SECTION2-END */ in my file. My file contains the following information:
/* SECTION1-BEGIN */
,
/* SECTION1-END */
/* SECTION2-BEGIN */
,
/* SECTION2-END */
/*... (5 Replies)
Discussion started by: azdps
5 Replies
9. Shell Programming and Scripting
hi
i have a requirement to replace a string with another using sed and to get the result newline separated but after sed replacement the newline vanishes
below is sample code
#!/bin/ksh
set -x
string="name sam\nage 45 \nsport soccer"
echo $string
string=`echo $string | sed... (2 Replies)
Discussion started by: midhun19
2 Replies
10. Shell Programming and Scripting
Hello Gurus,
I have a filesystem like below :
/u03/oracle/EBSDEV/fs1/EBSapps/appl
I want to get only the portion of the above text like below...
/u03/oracle/EBSDEV
Can you please advice on this?
Thanks-
P (5 Replies)
Discussion started by: pokhraj_d
5 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)