Hello, I am creating a shell script and I am almost done. I have certain things I want done in the shell but don't know how to finish it properly.
Here is what I am aiming to do. I am aiming to have a shell that takes at least 3 parameters. The first two are the two words to replace (the first being the word replaced and the second being the word to replace it with) and then the third (and beyond) parameter, are all the files to make the changes to.
Here is what I have so far but its not working correctly and giving me incorrect output when using special characters such as changing 'Unix' to 'U N I X'
Hi,
I need of a simple shell script to launch a perl script.
The complet path of the script is:
/export/home/x2693/project/v02/appliancemanagement.pl (2 Replies)
Hi All
I have requirement to write a shell script which would look for the userid which is logged in , and once the User id is found i would delete certain
lines from a parameter file ..
here is what iam using
a=ps -o user | grep -v user | uniq
then using an if condition and... (4 Replies)
Hi,
I am new to unix and using linux 7.2. I would like to create a script that would make it easyer for me to run my java programms. At the moment I have to type java myJavaprogram
I am trying to write a script that will allow me to type something like this "myscript myJavaprogram" or maybe... (4 Replies)
Am VERY new to UNIX and need to know the answer to this particular question :-
Write a short shell or perl script to do the following tasks:
4.1 Move all the files mentioned (there are other files in the directory) from their current directory to /home/selvarde/testfiles/ and add the file... (1 Reply)
Hello Friends,
I am writing a shell script which will grab a file if it exists and copies it to another folder and will append with current date. I have written but gives me error, plz help:
--------------------------------------------
#!/usr/bin/sh
source=/home/dev4rice/naveen/test1... (4 Replies)
Hello forum members,
I have to redirect a output of command into a text file inside a script file but iam getting an errors.so please see below script and suggest me for corrections.
#!/bin/ksh
read IP_ADD
echo nslookup $IP_ADD 2>&1| tee log1.txt
cat /amex/gcst/siva/Testr/log1.txt... (6 Replies)
Write a shell that receives as parameters two folder names. Copies the
second folder as subfolder into the first one. Only folders and files
with the '.txt' extension will be copied. Detect and avoid recursive copy.
This is what I have to do and I don't know where to start. In fact, I started... (5 Replies)
Hi ,
I am in need of simple shell script that has one input file containing some words
Input file 1 :
****ALEX***JOHN*******VIRGIL*****
CHRITINE*****FAISAL*****DON*****
****ALEX***JOHN*******VIRGIL*****
CHRITINE*****FAISAL*****DON*****
****ALEX***JOHN*******VIRGIL*****... (6 Replies)
Write a shell script which adds up 10 numbers entered by the user and displays the
result to the screen. You must use the read command to obtain the numbers from
the user.
Im a nooby noob (2 Replies)
Hello,
I need to create one very simple shell script that checks if the first character of the file ./pump.txt is 0 and in that case gives a message.
If the first character is instead 1, it does give a different message.
I have written:
irr= head -c 1 ./pump.txt
if ]; then
echo... (4 Replies)
Discussion started by: dcaccount
4 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.16.3 2010-06-11 SHELL-QUOTE(1)