Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Signal question
Top Forums Shell Programming and Scripting Signal question Post 302071301 by jim mcnamara on Friday 14th of April 2006 06:46:21 AM
Old 04-14-2006
The first line
Code:
ls /etc/sysconfig/network > /dev/null 2>&1

would be used to find out if /etc/sysconfig/network exists or not
The output of ls is redirected to the bit bucket, and @>&1 redirects stderr (2) into stdout (1). This means that the ls command cannot produce anyout to the tty.

The "#@" -- if this is at the beginning of a line it's a comment, comments start with #.
If it's embedded somewhere in the middle of something like a regular expression, I have no idea.

What does this have to do with signals?
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

kill signal

Hello e'bdy, We have WebSphere MQ running on AIX 5.1 Every weekend MQ receives a kill -30 signal from some process or user and offloads a big error file. There is no way in MQ through which that process can be tracked. Is there something which i can do on UNIX level to trap the process? Best... (3 Replies)
Discussion started by: jhaavinash
3 Replies

2. Programming

Signal Handling

Hi folks I'm trying to write a signal handler (in c on HPUX) that will catch the child process launched by execl when it's finished so that I can check a compliance file. The signal handler appears to catch the child process terminating however when the signal handler completes the parent... (3 Replies)
Discussion started by: themezzaman
3 Replies

3. Programming

signal handling question

Hello all, I am starting to learn signal handling in Linux and have been trying out some simple codes to deal with SIGALRM. The code shown below sets a timer to count down. When the timer is finished a SIGALRM is produced. The handler for the signal just increments a variable called count. This... (7 Replies)
Discussion started by: fox_hound_33
7 Replies

4. Shell Programming and Scripting

Killed by signal 15.

Hi all I have Master script, Main script ,and 4 Child script. Master.sh #!/bin/bash /export/home/user/Main.shMain.sh #!/bin/bash /export/home/user/Child1.sh & /export/home/user/Child2.sh & /export/home/user/Child3.sh & /export/home/user/Child4.sh &I run only Master.sh script... (1 Reply)
Discussion started by: almanto
1 Replies

5. Programming

RLIMIT_STACK signal's

I'am expecting a signal, but no signal is received when the stack-size reaches 10 bytes. Here in this code i'am setting rlim_cur=10bytes. To be more precise, when it reaches 10 bytes the process must receive a SIGSEGV signal? But i find no signal being received. Am i missing something in this... (0 Replies)
Discussion started by: prajwalps97
0 Replies

6. UNIX for Advanced & Expert Users

need more user signal

Hi In my program I have already used both SIGUSR1 SIGUSR2 user signals. I need another one. How can I do that? Thank you Naama (1 Reply)
Discussion started by: naamabm
1 Replies

7. Programming

Question (pthread): How to Signal all threads w/o "broadcast"?

Hello all, Is there any way that I can signal (wake) all threads that I have created without using pthread_cond_broadcast? Cheers! Aaron (6 Replies)
Discussion started by: mobility
6 Replies

8. Solaris

Exiting signal 6

Hello all, I have a problem when installing Solaris 10 on Enterprise 450. I booted from dvd, then the installation was started. The error appeared after determining the installation method, F2-Standard, F?-Flash...... The error was Exiting signal 6. Please, need help. Thank you (4 Replies)
Discussion started by: Hardono
4 Replies

9. Programming

Signal function

Hello I want to know how can i use signal function in c for keyboard interrupt handling. what i exactly want is : my program is processing and if i press any key while processing , the program should call the interrupt and displays/prints that key and now goes back to processing. I added the... (5 Replies)
Discussion started by: Jahanzeb
5 Replies

10. Shell Programming and Scripting

Case signal

Task 1: #!/bin/ksh if then echo "Usage : $0 Signalnumber PID" exit fi case "$1" in 1) echo "Sending SIGHUP signal" kill -SIGHUP $2 ;; 2) echo "Sending SIGINT signal" kill -SIGINT $2 ;; 3) echo "Sending SIGQUIT signal" kill -SIGQUIT $2 (3 Replies)
Discussion started by: Ramesh M
3 Replies

LEARN ABOUT REDHAT

adsl-status

ADSL-STATUS(8)						      System Manager's Manual						    ADSL-STATUS(8)

NAME

       adsl-status - Shell script to report on status of PPPoE link

SYNOPSIS

       adsl-status [config_file]

DESCRIPTION

       adsl-status is a shell script which checks the status of the PPPoE link established by the Roaring Penguin user-space PPPoE client.  If you
       omit config_file, the default file /etc/sysconfig/network-scripts/ifcfg-ppp0 is used.

AUTHOR

       adsl-status was written by David F. Skoll <dfs@roaringpenguin.com>.

       The pppoe home page is http://www.roaringpenguin.com/pppoe/.

SEE ALSO

       pppoe(8), adsl-start(8), adsl-connect(8), pppd(8),  pppoe.conf(5),  adsl-setup(8),  adsl-stop(8),  pppoe-sniff(8),  pppoe-relay(8),  pppoe-
       server(8)

4th Berkeley Distribution					   16 March 2000						    ADSL-STATUS(8)
All times are GMT -4. The time now is 02:33 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy