Sponsored Content
Top Forums Shell Programming and Scripting Limiting the hanging of a function inside a loop Post 302234199 by otheus on Tuesday 9th of September 2008 09:49:47 AM
Old 09-09-2008
You run your function in the background. After that starts, you sleep 5 seconds, then kill it with %1. Then call wait.

Code:
date
function($t) &

# get job number
x=`jobs -p`
# kill that job in 5 seconds
{ sleep 5; kill $x; } &>/dev/null &

# wait for something to finish
wait $x
date

The wait will complete when all sub-processes have finished. The kill will silently fail if the job completes first.

Hope this helps.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

value inside a function

i have a script like this #!/bin/ksh initialize() { x=20 } ... ... ... x=10 initialize; echo $x (2 Replies)
Discussion started by: trichyselva
2 Replies

2. Shell Programming and Scripting

Function's return value used inside awk

I have a file with the record of person: cat > $TMP/record.txt John Torres M Single 102353 Address Mark Santos M Maried 103001 Address Carla Maria F Maried 125653 Address #!/bin/ksh ManipulateID(){ ... return 0; ... #or return 1; } cat $TMP/record.txt | awk 'BEGIN {printf... (4 Replies)
Discussion started by: Orbix
4 Replies

3. HP-UX

Limiting SFTP Users While Not Limiting Regular Users?

Hi, I have searched the web and have come back with nothing that is satisfactory for what I require. SFTP is my corporations new file transfer standard. What I require is a method to lock down SFTP users to their directory (they may go to sub directories) while not restricting regular users. ... (2 Replies)
Discussion started by: Emancipator
2 Replies

4. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

5. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies

6. Shell Programming and Scripting

PERL - press Enter function hanging

Hi, I have a sub function called pressEnter within my perl menu script which basically means that the script will await an interaction from the user before moving on. Unfortunately when the script goes into pressEnter it just hangs (even if you press enter!!). Any ideas on what could be... (4 Replies)
Discussion started by: chris01010
4 Replies

7. Programming

Changing value inside function

I have the following code and want to update shiftDesc inside the function. Is it correct to declare the argument as: int shiftDesc void prValue_vd( FILE* stream, // name of output stream int shift, // amount of shift to the right const char* value,... (1 Reply)
Discussion started by: kristinu
1 Replies

8. Shell Programming and Scripting

If loop inside function not working.

check_deplver () { dir=/abc/def/ghi if ssh -o StrictHostKeychecking=no $1 "" 2> /dev/null then echo " output is " ssh -o StrictHostKeychecking=no $1 "ls -lrt $dir | grep -i abc" 2> /dev/null else echo " directory not presnt" fi } This is not working. But... (7 Replies)
Discussion started by: NarayanaPrakash
7 Replies

9. UNIX for Dummies Questions & Answers

Write a while loop inside for loop?

I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off.... I know I can use an if-then statement in my for loop but can I include a while loop in my for loop? (3 Replies)
Discussion started by: xxhieixx
3 Replies

10. Shell Programming and Scripting

Need help on awk for printing the function name inside each function

Hi, I am having script which contains many functions. Need to print each function name at the starting of the function. Like below, functionname() { echo "functionname" commands.... } I've tried like below, func=`grep "()" scriptname | cut -d "(" -f1` for i in $func do nawk -v... (4 Replies)
Discussion started by: Sumanthsv
4 Replies
continue(3tcl)						       Tcl Built-In Commands						    continue(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME
continue - Skip to the next iteration of a loop SYNOPSIS
continue _________________________________________________________________ DESCRIPTION
This command is typically invoked inside the body of a looping command such as for or foreach or while. It returns a TCL_CONTINUE code, which causes a continue exception to occur. The exception causes the current script to be aborted out to the innermost containing loop command, which then continues with the next iteration of the loop. Catch exceptions are also handled in a few other situations, such as the catch command and the outermost scripts of procedure bodies. EXAMPLE
Print a line for each of the integers from 0 to 10 except 5: for {set x 0} {$x<10} {incr x} { if {$x == 5} { continue } puts "x is $x" } SEE ALSO
break(3tcl), for(3tcl), foreach(3tcl), return(3tcl), while(3tcl) KEYWORDS
continue, iteration, loop Tcl continue(3tcl)
All times are GMT -4. The time now is 12:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy