12-23-2018
Quote:
Originally Posted by
sadique.manzar
Hello Team,
In my shell script, it stopped without killing it.
Could you please help why ?
Below is the code :
..
.
You say: "It stopped". Please show context.
Quote:
Originally Posted by
sadique.manzar
@RudiC No, i am worrying and just wanted to confirm does break can impact the while true condition if the ssh connection refused ?
or it will break and keep on running again and again due to while true condition.
This is not in line with what you said before.
Impossible without further info.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
ok, i know the syntax that goes along with the Shutdown command... but my box never wants to ... well... shutdown.. it only halts, kills all the process's, stalls the comp to a complete stop, but does actually kill the monitor and/or shut off the physical computer. it will reboot properly though,... (3 Replies)
Discussion started by: 01000101
3 Replies
2. UNIX for Dummies Questions & Answers
I have heard for a long time that in maybe 2039 Unix will no longer be useable due the length of the date value. Anyone know anything about this? (4 Replies)
Discussion started by: dhlopomo
4 Replies
3. Shell Programming and Scripting
Hi guys,
I'm new to unix but loving it!! BUT this is driving me nuts as i can't work out the best way to do it.
I have a while true loop that i use to monitor something. For my own reasons in ths script i have disabled the CTRL C using the trap command. But i want to put in a option to exit... (5 Replies)
Discussion started by: Noob e
5 Replies
4. Shell Programming and Scripting
I am running an Ubuntu Gutsy laptop with Advanced Compiz fusion options enabled. I am using xdotool to simulate keyboard input in order to rotate through multiple desktops.
I am looking for a way to kill a while true loop when the Enter key (or Control+C if it is easier) is pushed when the... (2 Replies)
Discussion started by: acclaypool
2 Replies
5. UNIX for Dummies Questions & Answers
Hallo everybody
I am having a shell script called auto_run.sh in that only the first line works.
the second line which has sed command is working only at the # prompt. not within the shell script. What could be the reason.
*... sed 's/ //g' KTI >abc works in another shell script without the... (6 Replies)
Discussion started by: naushad
6 Replies
6. UNIX for Dummies Questions & Answers
When I try to exit a session, the message 'there are stopped processes' appears and I can not log out? Solution, please? (2 Replies)
Discussion started by: operag
2 Replies
7. Shell Programming and Scripting
Hi
I need help with a script to loop unitl the statement is true
done some thing like this
until
if
then
cp filename filename.anto
fi
done
Regards, (3 Replies)
Discussion started by: antointoronto
3 Replies
8. Shell Programming and Scripting
Hi,
I've been wondering about this for a while and I just don't know where to start looking. Some of my scripts always get stopped when I start them with
$ script.plx &in the shell (bash, on Debian lenny, logged in via ssh from a Mac OS machine using Terminal.app). After a few seconds I keep... (4 Replies)
Discussion started by: mregine
4 Replies
9. Shell Programming and Scripting
hi,
i am new in bash scripting.
i am trying to write a Bash script to monitor how many process are running in my Redhat6 Linux machine.
example :
let say there must be always 5 process from the same kind that must run and if one off them fails down the script must wake up another process... (2 Replies)
Discussion started by: zigizag
2 Replies
10. Shell Programming and Scripting
Hi Team,
I need to know why ppl use If true loop instead of just writing down the sequence of code lines.
1:
echo "Line1"
if true; then
echo "Line2"
fi
echo "Line3"
2:
echo "Line1"
echo "Line2"
echo "Line3"
Could you explain what does the if true loop make difference in 1st compare... (3 Replies)
Discussion started by: chandana hs
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)