Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

ctrl-c in script

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting ctrl-c in script
# 1  
Old 08-03-2011
ctrl-c in script
how to send ctrl-c signal in scripts ???
i am executing top command in .exp script

top command gives cpu running activities on your machine
eg

Code:
[root@aaaaa ~]# top
top - 18:41:01 up  8:38,  5 users,  load average: 0.03, 0.16, 0.16
Tasks: 172 total,   1 running, 170 sleeping,   0 stopped,   1 zombie
Cpu(s):  2.6%us,  1.0%sy,  0.4%ni, 92.1%id,  3.5%wa,  0.2%hi,  0.3%si,  0.0%st
Mem:   1942552k total,  1805524k used,   137028k free,   445796k buffers
Swp:  5116692k total,        0k used,  5116692k free,   873612k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                    
16838 root      15   0  144m  52m  14m S 15.8  2.8   1:29.38 npviewer.bin                                                                                               
 3425 root      15   0  286m  17m 8976 S  4.0  0.9   4:55.70 Xorg                                                                                                       
14771 root      15   0  2428 1060  792 S  2.0  0.1   0:21.24 top                                                                                                        
  1 root      15   0  2160  648  556 S  0.0  0.0   0:00.61 init                                                                                                       
   2 root      RT  -5     0    0    0 S  0.0  0.0   0:00.04 migration/0                                                                                                

    3 root      39  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0



to stop top command from exectunig we have to press ctrl-c

i want to send ctrl-c signalin .exp script or a simple bash script



thx in advance
Last edited by pludi; 08-03-2011 at 11:06 AM..
# 2  
Old 08-03-2011
You can ALSO use 'q' to exit top. Since top is a interactive command, using it in a script is not a good idea. However, a expect script my help you to automatically interact with top. man expect please.
# 3  
Old 08-03-2011
Code:
 
Why can't you use "-d" option available with "top" instead of Ctrl-C

# 4  
Old 08-03-2011
In response to the original question, "kill" is the name of the command used to send signals to processes.

Regards,
Alister
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Automation of keyboard inputs..like Ctrl+d and Ctrl+a

Hi..! I'm stuck with my automation of starting a process and keeping it running even after the current ssh session has exited.. So i'm trying to use command 'screen'. which is doing exactly what i wanted, But the problem is automation of the same. i will have to press Ctrl+a and Ctrl+d for... (2 Replies)
Discussion started by: chandana hs
2 Replies

2. UNIX for Dummies Questions & Answers

Ctrl-V + Ctrl-J for newline character does not work inside vi editor

Hi friends, I am trying to add a newline char ('\n') between the query and the commit statement in the following shell script. #! /bin/sh echo "select * from tab; commit;" > data.sql I have tried typing in "Ctrl-V + Ctrl-J" combination which has inserted ^@ (NUL) character but the commit... (1 Reply)
Discussion started by: royalibrahim
1 Replies

3. Shell Programming and Scripting

ctrl-c in shell script

The below script has Perl script in it where it gives the usage details. filer.sh echo echo -en "Enter filer : " read filer echo "test.pl -f $filer -F L" Output ========= The following hosts are online and available: Name Total Allocated Used ... (2 Replies)
Discussion started by: nareshkumar522
2 Replies

4. Shell Programming and Scripting

How to handle CTRL+Z or CTRL+C in shells script?

Hi, while executing shell script, in the middle of the process, if we kill the shell script( ctrl+z or ctrl+c), script will be killed and the files which using for the script will be in the folder. How to handle those scenarios. Is there any possibilities, if user breaks the script, I need to... (3 Replies)
Discussion started by: ckchelladurai
3 Replies

5. Shell Programming and Scripting

Ctrl-C or Ctrl-Z causing exit the session

H! I have written script where it need to invoke the perl script in background, then write the pid in temp file then bring back the job to foreground. whenever the Ctrl-C or Ctrl-Z is pressed in the script has to exit and prompt should be dispalyed. but this script causing exit from shell session... (2 Replies)
Discussion started by: jramesh1
2 Replies

6. UNIX for Advanced & Expert Users

trap ctrl c in shell script

how to trap the ctrl c in unix shell script my script is running in while loop it should not be terminate with ctrl c. if i press ctrl c while running script it shloud ignore the same. please healp.......... thanks in advance (2 Replies)
Discussion started by: arvindng
2 Replies

7. Shell Programming and Scripting

terminating script with CTRL+D

Hi, I'm trying to make a script that reads the console input and terminates with CTRL+D. It's absolutely basic but I don't know how to "read" the CTRL+D. I've tried a bunch of things like EOT=^D while //with & without quotations do read input echo $input done while while ] ... (12 Replies)
Discussion started by: sanchopansa
12 Replies

8. AIX

Disable ctrl-c,ctrl-d,ctrl-d in ksh script

I wrote a ksh script for Helpdesk. I need to know how to disable ctrl-c,ctrl-z,ctrl-d..... so that helpdesk would not be able to get to system prompt :confused: (6 Replies)
Discussion started by: wtofu
6 Replies

9. Shell Programming and Scripting

How to secure my script from Ctrl-C

Hi all I am looking for a way to ensure that once a user is logged in and running a script, he cannot break out of it. Thanks J (12 Replies)
Discussion started by: jhansrod
12 Replies

10. UNIX for Dummies Questions & Answers

Script ctrl+c

How do you make a script so the user can not press ctrl+c and break out of the script? Thanks, :) (1 Reply)
Discussion started by: newtounix
1 Replies
Login or Register to Ask a Question