I have a job that runs for an unspecified amount of time. I want to run this as a cron job for a specified amount of time, say 2 hours. Once the time is up, the program should be killed in the middle of execution. How can I do this?
Thanks. (5 Replies)
Hi all!
Can someone please help me create a command to accomplish the following task.
I have a parent directory called ex. /var/www/parent and it has a bunch of sub-directories called /var/www/parent/1, var/www/parent/1/xyz/ and etc.
What I would like to do is to count the number of files... (2 Replies)
Hi all,
now i am writting one bash script. in that my requirement is
i need to create one directory and that the directory details to be stored in one file Ex. date/time and all in one file.
after that i need to delete the folder automatically exactly after 3months.
between these time... (5 Replies)
Hey guys, I'm fairly new at unix shell scripting and I have a quick question.
Quick overview I devolped a script where I generate a file ..and I want to grep any time greater than 30 minutes.
What i do is runa command to generates the below and puts it into a file:
I run
./ggsci << endit... (4 Replies)
Hi,
I have some folders (containing files) which gets created daily and names start with 'TT_' . I would like to remove these folders every month end.
Could you please provide me the commands and also the syntax to schedule through crontab.
Thanks,
Archana (3 Replies)
Hi,
Below is my OS details.
uname -an
SunOS mymachine 5.10 Generic_144488-07 sun4v sparc SUNW,SPARC-Enterprise-T5220
I need to know when was my Apache server last started. Whats is the best and most reliable way to find out not just for Apache but for any PID per say?
I am... (16 Replies)
Hi,
Can some one please tell me how do I generate a report of the Memory Consumption over a time period:
HP-UX B.11.31 U ia64 0440531406 unlimited-user license
I normally use glance to monitor memory in run time.
Note: I do not have root privileges.
Thanks
Danish
... (5 Replies)
I used this script to get the connection to a domain in two specific minutes. I need to extend to give result over a range of minutes.
The below gives total number of connections in the minutes 00:40 and 01:13 on 22nd March.
egrep "22/Mar/2013:00:40|22/Mar/2013:01:13"... (1 Reply)
Hello All,
As I stated in subject, I need a command to terminate my tcpdump command in a certain time period. (using HP-UX)
I am using below one to terminate when number of captured packages reach 3 limit.
But what if there will no packet come in 5 min for instance?
Please help me to find a... (2 Replies)
Discussion started by: mrcrowley
2 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)