Hi
I have a file say xyz.sh, whose contents are as follows :
***************************
#! /bin/ksh
set -x
. /a.sh
. /b.sh
. /c.sh
*****************************
Now will this execute all the three process simultaneously or sequentially?
If it will process simultaneously, is... (3 Replies)
Hello,
Every evening I run few shell scripts on AIX Production Box, One shell script takes about one hour to complete and does some DB updation and application processing etc. The shell scripts are getting launched from prompt and not through cron or any scheduler as they require some manual... (0 Replies)
Hi,
I want to run a crontab job on solaris10.5. I have configured the crontab accordingly
10 * * * * /scripts/dbalter.pl >> /scripts/cronout.txt.However this does not work .Then I go to /var/mail/root and find an error in the output:... (4 Replies)
All,
We need to run multiple jobs in parallel with the dependencies intact.
I was trying to use the same with &, but in vain. Is there is any other way to resolve this issue.
I need to run
Set1
A.sh
B.sh
C.sh
Set2
D.sh
E.sh
Set3
F.sh (10 Replies)
Hi All,
At present I am using a UNIX Script which is running a set of JOBS. These JOBS are to be repeated for 20 times, means the same set of JOBS are repeated by just passing different arguments (From 1 to 20).
Is there any way by which I can execute them parallel?
At present its all... (4 Replies)
Hi All,
I am facing a problem with crontab.I made an entry in crontab like this
05 07 * * * /afs2/cdwfullacc/current/exe/cdw_generate_special_klant.sh > /afs2/cdwfullacc/current/scratch/cdw_gen_cron.log
But job was not getting executed.
Entry in crontab was made with same user by whom... (4 Replies)
All,
I have to copy huge file from one location to another using python . I want to make sure the execution of Copy command is successful and all the files are copied properly (there has not been any abrupt interruption to the copy process or error like no space available is encountered during... (2 Replies)
All,
I have to copy huge file from one location to another using python . I want to make sure the execution of Copy command is successful and all the files are copied properly (there has not been any abrupt interruption to the copy process or error like no space available is encountered during... (5 Replies)
Hi,
we've configured mail on DB2 data studio DSWC console. (gave mail relay server details) it used to work fine. like whenever we schedule backup jobs from DB2 side, we used to get emails after job completion.
for some reason, it stopped working now.
Please see the below info messges... (8 Replies)
HI,
I have written an executable file in unix and I was able to execute it successfully but when I called this file with cron job it was giving error like "permission denied" and "No such file or directory".
Please help in how cron calls the file and what permission is required on the file... (2 Replies)
Discussion started by: vipin kumar rai
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)