If you forgo the required error message, this could work for you:
To produce the error checking and message, a serious detour must be taken, and we need to know what your OS and shell versions are.
This can produce multiple answers if $1=ann and both ann and anna are users in /etc/passwd
Hi
I am looking for the script which can move 1month old data from a TXT file.actully in this file data is appended on daily basis.pleasehalp me out.
Thanks in advance (3 Replies)
I have a code given below...
ERROR=`grep "Job Status" ${LOG_FILE}`
ERROR=${ERROR##*\(}
ERROR=${ERROR%%\)*}
if
then
echo "The job completed successfully"
EXIT_STATUS=0
else
echo "The job failed"
EXIT_STATUS=1
fi
can anybody tell me what is
ERROR=${ERROR##*\(}... (1 Reply)
hi
i am new to linux world please help me,i have two files in diff location
i need to compare both and i need to see difference b/w them
ex /media/txt (file1)
xxxxxx
xxxxxx
xxxxx
xxxxxx
xxxxxx
/media/rev/ (file2) rev is a folder which contains some files so i need to compare the files in... (3 Replies)
Hi!! Im new to shell scripting. I have an important assignment to complete in my company tomorrow. Please help me. I have to write an interactive script which does the following thing:
There is a file named ""rules"in a folder say /home/f1/ . This file contains text in the form:
123
345... (5 Replies)
hi,
Im trying to select from a sql using shell script and once i get count i need to add the count to the subject line and send mail to every1..
ex :
Select count(*) from emp;
In Shell script
echo $PASSWORD|$ORACLE_HOME/bin/sqlplus $USERID@$DBNAME @$SCRIPT_DIR/emp_count.sql... (1 Reply)
Hey all. Sometimes I'm tasked to change some router configs for the entire network (over 3,000 Cisco routers). Most of the time its a global config parameter so its done with a loop and an IP list as its the same configuration change for all routers. This is working OK.
However, sometimes an... (3 Replies)
Hi,
I am developing a script for writing out the failed jobs in file,
1)First step i need to create an empty file Status with today's date.
2)After that i need to execute the below command:
dsjob -server servername -user uname -password pwd -ljobs projectname
This will listout all... (5 Replies)
Hi,
I have a big list like this --> 3285
3289
328D
3291
3295
3299
329D
32A1
I need to make it like -->
3285|3289|328D|3291|3295|3299|329D|32A1
Please suggest. This is Linux OS. (8 Replies)
Hi team,
I am looking to execute some command through xargs.
$cat testfile | grep myloc
alias myloc='cd /export/nfs-1sv-23/'
I am trying to execute that alias as soon as i cat and grep ?
I tried with $cat testfile | grep myloc | xargs --> no luck ...
Can some one assist me with... (6 Replies)
TAG flow Between SDR and DELTA
SDR is the Source table.
Delta is the target table having one staging table and one Main table.
Tags flows between SDR and Delta through ER gateway.
From SDR (SDR.CUSTOMER_PRODUCT and SDR.CUSTOMER_PRODUCT_RELATIONSHIP) the Tags flows to ER... (2 Replies)
Discussion started by: patitapaban
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)