Error output of cat to /dev/null Post: 302493930

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error piping nohup to /dev/null

Hi, I have a script as follows: #!/bin/sh nohup ./my_program >& /dev/null & However, i get a "Generated or received a file descriptor number that is not valid" whenever I run it. running the command up in prompt is ok though. if i change the first line to #!/bin/csh i get a then:...

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cat /dev/null

Hi, Excuse my ignorance here - I'm a networks man and my knowledge of all things unix is somewhat limited. We have a very large file (/var/tmp/mond.log) that we need to zero - does the "cat /dev/null > /var/tmp/mond.log" command achieve this?

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Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:...

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LEARN ABOUT OSF1

switchlog

switchlog(8)						      System Manager's Manual						      switchlog(8)

NAME

       switchlog - moves an AdvFS file domain transaction log

SYNOPSIS

       /sbin/advfs/switchlog domain_name vol_id

OPERANDS

       Specifies the name of an existing file domain.  Specifies the number of the new volume to use for the log.

DESCRIPTION

       The switchlog command relocates the transaction log of the specified file domain to a different volume in the same file domain.	Moving the
       transaction log within a multivolume file domain is typically done to place the log on either a faster, less congested, or mirrored volume.

       Use the showfdmn(8) command to determine the current location of the transaction log. In the showfdmn command display, the  letter  L  dis-
       plays next to the volume that contains the log. The showfdmn command also displays all of the volumes and their volume numbers.

RESTRICTIONS

       You must be the root user to use this command.

EXAMPLES

       The  following  example	displays  the  log's  current  location  by  using the showfdmn command and then moves it to volume 2 by using the
       switchlog command.  # /sbin/showfdmn domain_eng

	      Id	     Date Created   LogPgs Version Domain Name 30bf7d8f.0000ec60 Fri Feb  1 17:11 1999 512	 4 domain_eng

       Vol   512-Blks	    Free  % Used Cmode	Rblks Wblks  Vol Name
	1L    1160604	  316688     73%    on	 128   128  /dev/vol/v_a
	2     3577488	 1495760     58%    on	 128   128  /dev/vol/v_b
	3     1160604	  305264     74%    on	 128   128  /dev/vol/v_c
	   ----------  ---------  ------
	      5898696	 2117712     64% # /sbin/advfs/switchlog domain_eng 2

FILES

       Contains file domain names and devices.

SEE ALSO

       Commands: mkfdmn(8), showfdmn(8)

       Files: advfs(4)

																      switchlog(8)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

error piping nohup to /dev/null

Discussion started by: mochi

2. Solaris

URGENT - setup port and dump all output to /dev/null or a file

Discussion started by: frustrated1

3. Solaris

What is /dev/tty /dev/null and /dev/console

Discussion started by: civic2005

4. UNIX for Dummies Questions & Answers

cat /dev/null

Discussion started by: freakydancer