01-19-2010
Quote:
Originally Posted by
BundBash
Thanks Scrutinizer.....that is working great.....can u briefly explain why you add a < so i can understand......am a new starter
Hi, if you use
< then the wc command leaves out the file name.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
how do u insert text into a specific place in a file, say the middle for example, without changing the name for that file (1 Reply)
Discussion started by: mopimp
1 Replies
2. Shell Programming and Scripting
Script 1
Pre-requisites
Create a file with x amount of lines in it, the content of your choice.
Write a script that takes two arguments. The first being a line of text, the second being your newly created file. The script should take the first argument and insert it into the very top (the... (3 Replies)
Discussion started by: ali hussain
3 Replies
3. Shell Programming and Scripting
I want to insert a text into the middle of a file (3 Replies)
Discussion started by: relle
3 Replies
4. Shell Programming and Scripting
Can anyone help me pls? I want to add a text into the middle of file.
I've writtenthe following script
text to add="$1"
file="$2"
lines=$(wc -l $2)
half_lines=$(expr $lines / 2)
head -$half_lines $2 > temp
echo "text to add" >> temp
((half_lines=$half_lines + 1))
tail -$half_lines $2... (6 Replies)
Discussion started by: relle
6 Replies
5. UNIX for Dummies Questions & Answers
Hey guys, how do we take a line of text as an argument from a user and then insert it in the middle of a file irrespective of the number of lines in the file. I am trying to do this without SED or AWK. Inserting it in the beginning and at the end is easy, but i am trying to accomplish inserting... (6 Replies)
Discussion started by: kartikkumar84@g
6 Replies
6. Shell Programming and Scripting
I've got a configuration file that is filled with xml text statements for example:
<...../>
<...../>
<...../>
<data id="java-options" value="-server -Djava.security.policy..../>
<...../>
<...../>
<...../>
I want to write a korn shell script that will go to this specific line and add a... (2 Replies)
Discussion started by: progkcp
2 Replies
7. Shell Programming and Scripting
Hi,
Below is my issue which I desperately need and I want a shell script which can do this job.
1. There are 10 log files in a particular location.
2. open each log file. Goto to the end of the file. From the end go up to find a particular text. From this particular text till the end of... (3 Replies)
Discussion started by: kashriram
3 Replies
8. Shell Programming and Scripting
Hi,
So far i've made a script that takes two argument, 1st is the contents and the 2nd is the named file. At the moment i've managed to insert new contents as a new line at the top, but i want to ask how can you insert contents in the middle of the file?
Source Code
#!/bin/bash
#Write... (3 Replies)
Discussion started by: zen10
3 Replies
9. Shell Programming and Scripting
Hello,
I have a comma separated flat file. It contains some 20 columns. I want to add two new columns at position 2,3. So that file will have 22 columns. I am providing here sample data with file having 4 columns. Appreciate your help in finding solution for this.
data in input file:... (11 Replies)
Discussion started by: ravi.videla
11 Replies
10. Shell Programming and Scripting
Hi ,
I need to add few new columns in existing file .Any help would be great
ex:
existing file
name,typ,add,dept
New file(com1,sal are new)
name,com1,type,sal,add,dept
Thanks,
mohan (1 Reply)
Discussion started by: mohan705
1 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)