Sponsored Content
Top Forums Shell Programming and Scripting Error output of cat to /dev/null Post 302493929 by Nils88 on Friday 4th of February 2011 08:03:06 AM
Old 02-04-2011
I'm writing/testing the script on
- Linux pclinux 2.6.15-27-386 #1 PREEMPT Sat Sep 16 01:51:59 UTC 2006 i686 GNU/Linux (ubuntu dapper drake)
- /bin/bash
But eventually it needs to run on
- Linux embLinux 2.6.12 #184 Wed Dec 9 08:35:30 CET 2009 armv4tl unknown
- /bin/sh
The results are the same on both systems

- anything between 0 and 100 files
- the files are created using gedit
Code:
`cat /dirA/dirB/temp*.log > /dirA/dirB/final.log 2>/dev/null`$
`rm /dirA/dirB/temp*.log 2>/dev/null`$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

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:... (4 Replies)
Discussion started by: mochi
4 Replies

2. Solaris

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

Please help urgently. I need to setup up some sort of service on a solaris server on a port. I dont need it do anything special, anything that is sent to this port from an external server should be dump to /dev/null or a flat file.. Can you help urgently? (1 Reply)
Discussion started by: frustrated1
1 Replies

3. Solaris

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

Hi, Anyone can help My solaris 8 system has the following /dev/null , /dev/tty and /dev/console All permission are lrwxrwxrwx Can this be change to a non-world write ?? any impact ?? (12 Replies)
Discussion started by: civic2005
12 Replies

4. UNIX for Dummies Questions & Answers

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? (4 Replies)
Discussion started by: freakydancer
4 Replies

5. UNIX for Dummies Questions & Answers

cp output /dev/null results in not a directory

Hello, I am working on a script to measure the read performance of a busybox environment. The logical choice is to use a command line like: (time cp * /dev/null) 2> /tmp/howlong.txt Ah, the rub is cp or /dev/null will only accept a single file at a time. The result in the txt file is and... (1 Reply)
Discussion started by: stevesmo
1 Replies

6. Ubuntu

tar not reading if output directed to /dev/null

I stumbled across a somewhat strange behavior of tar and find no explanation for it: i was testing a DVD for read errors and thought to simply tar the content and direct the output to /dev/null: tar -cvf - /my/mountpoint/*ts > /dev/null This way i expected the system to read the complete... (4 Replies)
Discussion started by: bakunin
4 Replies

7. UNIX for Dummies Questions & Answers

/dev/null 2>&1 Versus /dev/null 2>1

How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&" echo "hello" > /dev/null 2>&1 echo "hello" > /dev/null 2>1 (3 Replies)
Discussion started by: glev2005
3 Replies

8. HP-UX

/dev/Null error

Hi Guru's, I am trying to test the network speed or load by this command. but getting error " Not Connected ". Could you guys please help. ftp> put "|dd if=/dev/zero bs=8k count=1000000" /dev/null Not connected. Please use code tags! (9 Replies)
Discussion started by: sris.sun
9 Replies

9. Shell Programming and Scripting

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:... (5 Replies)
Discussion started by: jbmorrisonjr
5 Replies

10. Shell Programming and Scripting

redirect the audio output to /dev/null

I'm using an text-to-speech synthesis in a script, and I need to redirect it's output to /dev/null how can I do that ? And how to redirect the stream to his normal output then (sound card ) ? thankx (2 Replies)
Discussion started by: firelink
2 Replies
xchklog(8)						JFS utility - extract fsck.jfs log						xchklog(8)

NAME
xchklog - extract a log from the JFS fsck workspace into a file SYNOPSIS
xchklog [ -f output.file ] [ -p ] [ -V ] device DESCRIPTION
xchklog extracts the contents of either the most recent or immediately prior JFS fsck service log from the specified device, and writes the output into a specified or default file. (The default file name is <pwd>fscklog.new. If the -p option is used, the default file name is <pwd>fscklog.old.) The contents of the output file can be formatted into text by using the JFS utility xchkdmp. device is the special file name corresponding to the actual device from which the fsck log will be extracted (e.g. /dev/hdb1 ). OPTIONS
-f output.file Specify the output file name, overriding the default file name. output.file must be 127 characters or less in length. output.file will be created in the present working directory unless it is fully qualified. -p Extract the prior log (as opposed to the most recent log). -V Print version information and exit (regardless of any other chosen options). EXAMPLES
Extract the most recent log on /dev/hda5 into <pwd>fscklog.new: xchklog /dev/hda5 Extract the most recent log on /dev/hdb3 into /temp/l9651107.log: xchklog -f /temp/l9651107.log /dev/hdb3 Extract the prior log on /dev/hdb4 into <pwd>fscklog.old: xchklog -p /dev/hdb4 REPORTING BUGS
If you find a bug in JFS or xchklog, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site: http://oss.software.ibm.com/jfs Please send as much pertinent information as possible, including any xchklog error messages and the complete output of running fsck.jfs with the -v option on the JFS device. SEE ALSO
xchkdmp(8), mkfs.jfs(8), fsck.jfs(8), logdump(8), logredo(8), xpeek(8) AUTHOR
Barry Arndt (barndt@us.ibm.com) xchklog is maintained by IBM. See the JFS project web site for more details: http://oss.software.ibm.com/jfs January 11, 2002 xchklog(8)
All times are GMT -4. The time now is 04:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy