09-22-2012
10 More Discussions You Might Find Interesting
1. Cybersecurity
are there any unix certification's on security, and which is the most best one to take? (2 Replies)
Discussion started by: lealyz
2 Replies
2. Programming
I would like to become certified in C/C++ and UNIX. Can anyone assist by giving links or details of the best track I could take. (1 Reply)
Discussion started by: Lucky Luke
1 Replies
3. AIX
Hi,
I know this may not be the right place to put this but i wanted to know if there is any AIX certification avialable or something similar .
Or is there any general Unix certification .
TIA
Anubha (1 Reply)
Discussion started by: asinha63
1 Replies
4. UNIX for Advanced & Expert Users
Hi
I know Shell, AWK, SED, I am looking for some Certification Red Hat or any other recoginsed one.
I dont want to go into Networking I want to remain as Developer...So Can you help me in knowing what kind of Certifications are avaible. Links, PDF's, etc are most welcomed.
Thanks in... (3 Replies)
Discussion started by: niceboykunal123
3 Replies
5. HP-UX
Which certification I can go for?? (1 Reply)
Discussion started by: bharat.techie
1 Replies
6. UNIX for Dummies Questions & Answers
I'm learning UNIX on my Mac (BSD) and quite like it. I'm a newbie, but I think I'd like to eventually find some work with UNIX/LINUX. But I'm not sure where to begin -- there are so many versions and job options, it's kind of overwhelming.
A friend suggested learning Debian to start out with... (3 Replies)
Discussion started by: Straitsfan
3 Replies
7. Red Hat
Hi ,
Kindly I wonder whether have any idea about the difference between RedHat & Centos operating systems ? I totally know that Centos is a derivative of Redhat but I'm talking about the similarity in terms of administration ( are the commands same?) for instance If someone had installed Centos... (2 Replies)
Discussion started by: arm
2 Replies
8. UNIX for Dummies Questions & Answers
Hi all, I heard abt AIX course, is it good for my carrer?..:confused: I am a Bsc graduate.. Thanks in advance.. (1 Reply)
Discussion started by: gowtham16
1 Replies
9. HP-UX
Hi,
In my current organist I am using HP-UX.
I would like to get certified in UNIX but i am not sure for which certification i should go. I am thinking of either Solaris or HP-UX.
Please guide me which would be better for me?
And also let me what study materials should i use and the Fees... (3 Replies)
Discussion started by: ManishV
3 Replies
10. What is on Your Mind?
Hi guys,
What do you think about these certifications? (18 Replies)
Discussion started by: Luca.Francesca
18 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)