11-14-2011
Quote:
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
Also, please post what you've tried.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
Linux lxs3er06 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:58:04 EST 2007 i686 i686 i386 GNU/Linux
Issue:
While executing shell scripts in bash shell, following error messages are thrown:
rm:command not found
On doing little investigation, I added '/bin' to $PATH and on doing echo... (9 Replies)
Discussion started by: a1_win
9 Replies
2. Shell Programming and Scripting
PLEASE HELP!
NEED LINUX SCTIPT
Need to write a bash shell script to show information of employees of a department from a company data set.
The script should accept a project number (1/2/3/10/20/30) and output
* the name of the project
* the name of the manager of the controlling... (1 Reply)
Discussion started by: help123
1 Replies
3. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
2. Shell Bash Script
3.
!/bin/bash
if
echo no directory
then
mkdir -p /home/AC_Drywall
elif ; then
echo "$dir already exist"
fi (4 Replies)
Discussion started by: TomFord1
4 Replies
4. Shell Programming and Scripting
Hi,
maybe I'm asking a VERY dumb question, but would anybody out there tell me, why this f****** script won't work if executed as a cronjob, but works fine if executed from a shell prompt?
#! /bin/bash
set PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
date >>... (3 Replies)
Discussion started by: beislhur
3 Replies
5. Fedora
My shell environment is bash and desktop environment is LXDE. When I use the up and down button on the keyboard to view the command history on bash shell, many times part of the command from the history remains on the line. For example
/home/milhan > ssh somedomain.org
/home/milhan > then when I... (5 Replies)
Discussion started by: milhan
5 Replies
6. Shell Programming and Scripting
Migrating Unix batch jobs (Korn Shell) running in HP-UX server to Linux environment.
Hi All
Please help me to understand the easiest way to migrate Kernel Shell scripts to Linux Bash. Also let me know
1. Any automated scripts or tools available for this.
2. Challenges and issues... (5 Replies)
Discussion started by: cpremesh
5 Replies
7. Shell Programming and Scripting
So I'm trying to pass certain json elements as env vars and use them later on in a script.
Sample json:
JSON='{
"Element1": "file-123456",
"Element2": "Name, of, company written in, a very weird way",
"Element3": "path/to/some/file.txt",
}'
(part of the) script:
for s... (5 Replies)
Discussion started by: da1
5 Replies
8. Shell Programming and Scripting
I am trying to initialize a file name in bash but not having much luck. For example, one of my bash scripts outputs a file named "FILE_1000G.vcf". I would like to rename FILE to match with the user's name. This is my code:
set -e
echo "Please enter your filename:"
read filename
rename... (6 Replies)
Discussion started by: Geneanalyst
6 Replies
9. UNIX for Beginners Questions & Answers
In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed ? Is there any way to get the script names for the process command ?
--- Post updated at 08:39 AM ---
in KSH (Korn Shell), my command output shows the script names but when run in the Bash Shell... (3 Replies)
Discussion started by: i4ismail
3 Replies
10. UNIX for Beginners Questions & Answers
I have a csv file that looks like this
Name,Food,Sport
James,Curry,Gym
Darren,Pizza,Football
Jim,Fish,Hockey
James,Sushi,Tennis
My code looks like this
IFS=","
sed 1d $file_name | while read Name Food Sport
do
mkdir -p $Name
#echo "=================="
#echo "Name: $Name" (3 Replies)
Discussion started by: darklord173
3 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)