#! /usr/local/bin/bash
count=0
while : ; do
echo count = $count
((count=count+1))
read -t 10 && break
done
echo exited while loop
exit 0
This uses the -t option to the read command in bash. The "count" is just to have something that changes to display with each iteration. If the user presses return within 10 seconds, the read succeeds, otherwise it fails. (If it succeeds, we just discard the data that was read since no variable is used with the read.) -t works with bash, but most versions of ksh do not have it.
i wrote a while script as part of a huge program. this script, once picked, begins to output data to the person using it. pretty easy, as the person doesn't have to keep typing commands to get the output that the while loop automatically throws out.
now, the thing is, while this while-script... (3 Replies)
Hi All,
Can someone let me know how i can exit a for loop without exiting the script itself .... will the break statement work ....
please help ....
-Regards (2 Replies)
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)
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)
hi,
how to exit from "if" loop?actually i have mutliple "if" conditions, i have to exit from each "if" loop,if it is true...:confused:
Please suggest me... (3 Replies)
Below for loop not exiting. Can someone help?
JBOSS_INST_ARGS=01 02
if ; then
for i in $JBOSS_INST_ARGS; do
/u/jboss-6.1.0.Final/bin/jboss_init_wise$i.sh start;
done (8 Replies)
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)
Hi Folks -
Here is a for loop I've created and I just wanted to see if this was okay practice:
for M in NAME1 NAME1 NAME3
do
echo "Executing MaxL:" $M >>${_LOGFILE} 2>&1
. ${_STARTMAXLPATH}startmaxl.sh ${_MAINPATH}${_MAXLPATH}$M.mxl
_RC=$?
if
then
... (7 Replies)
Hello Team,
In my shell script, it stopped without killing it.
Could you please help why ?
Below is the code :
get_dpi44_currentFiles()
{
truncate --size 0 $dpi_44_fixed_currentFileList
if ssh $dpi_srvr_44 -p 2222 "ls $dpi_44_sourceFilesDir/fixed | grep '\.tgz$'" >... (5 Replies)
Discussion started by: sadique.manzar
5 Replies
LEARN ABOUT ULTRIX
break
break(1) User Commands break(1)NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop
SYNOPSIS
sh
break [n]
continue [n]
csh
break
continue
ksh
*break [n]
*continue [n]
DESCRIPTION
sh
The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.
The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.
csh
The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.
The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.
ksh
The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is
greater than the number of enclosing loops, the outermost enclosing loop shall be exited.
The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera-
tion are not performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), exit(1), ksh(1), sh( 1), attributes(5)SunOS 5.10 17 Jul 2002 break(1)