I've just started to explore NIM and I'm looking for additional information on how to set it up and configure it. I've read through the "NIM A-Z" and have many unanswered questions.
One question is how can I have the NIM server pull a mksysb of the clients and can I schedule this to happen... (1 Reply)
Hi,
I am a newbie to Unix, I was introduced to UNIX 8 months back during my Training, I was attracted to Unix as they give complete freedom. I would like to ask how can a OS Admin can go into development field of Unix. Currently I am working in a MNC in Backup- Storage Admin Domain I am... (1 Reply)
Hi all,
I am trying to get the exception count daily from a log file which is more than 1 GB in size.
I am using loops which get the count of the exception and transaction. But i need to take this exception count for a time frame from 5.00 am to 5:00 pm.
I Think I can use to exact the... (4 Replies)
Hello,
We've recently had a multiple hardrive failure in our legacy HP9000. Now the drives are repaired and the filesystems are recreated, I went to restore the last of the database tables from our dds3 backup, but cannot. Here's what's going on: BTW, I'm an absolute novice w/ HP-UX
The... (5 Replies)
Hi,
I am new with updates in RHEL especially servers. The question is:
1. Do I need to register to RHEL in order for me to use the up2date?
2. For updates in RHEL need to use up2date, but what is the thing that I need to do before the patches? I mean what should I backup in case my patches... (0 Replies)
Hi ,
I have a txt file with contents like:
1234
2345
3456
7891
I need to write a script which takes input file as txt file..run a sql query for that number and place the output of query in another file..
select * from bus_event where acct_nbr='1234'( from input txt file)
the query... (20 Replies)
I need some guidance on the differences in observations, not sure how significantly different are they.
Also, It would be nice to hear on the values and what the obvious tuning for performance missing.
Observation 1
ending vmstat -v 3948544 memory pages
ending vmstat -v ... (1 Reply)
Hi,
I am trying to debug some KSH script and it has the nawk portion below. I just want to confirm whether I understand what it does correctly.
Example usage of the nawk line is run as below:
nawk '/^#/ {next}
$1~/^'testp.cfg'$|^'testp.cfg'\.testdb\.com\.ph$/ {
c=0
while... (1 Reply)
Hey All,
I am newbie on scripting and need some guidance from all the experts here.
I am working on one project where I will check the status/health of around ten (10) solaris 10 servers.
I have one central server from where I have already setup the passwordless SFTP and setup the cron... (1 Reply)
Hi There,
I am new to AIX. I am eager to learn the AIX System administration or if there is any other prerequisite before this. Please can anyone help me or guide how to start with AIX, what all courses and certifications do I need to do. I have basic knowledge of UNIX.
Please guide as I am... (3 Replies)
Discussion started by: rahulat302
3 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)