/dev/null Post: 70963

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

>/dev/null

Maybe it's an stupid question but remeber... I'm Junior.. I use command line to run programs, and some of them gives a lot of information when, for example, you open a window or other actions. That's really bad because my terminal gets full of unwanted messages, so I use "bin file & >/dev/null"...

2. UNIX for Advanced & Expert Users

Q1 :/dev/null Q2 -A

Hi, Q1-What does nroff -ms > /dev/null Q2- What does mean -A under STAT column : ps aux |head -20 UTIL PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 516 93,0 0,0 12 12 - A 04 nov 3906:51 wait Thank you.

3. Shell Programming and Scripting

> /dev/null

hello all, In many shell scripts i found '> /dev/null' , i am not able to get this, will any one please explain why we are using this. thanks sudha

4. 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 ??

5. Shell Programming and Scripting

/dev/null

Hi expert, May I know what is the difference between below cron tab entry ? 0,12 * * * * /abc/myscript.sh > /dev/null 2>&1 0,12 * * * * /abc/myscript.sh

6. Shell Programming and Scripting

/dev/null what is the use of it?

when do you use the path /dev/null

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

8. 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:...

9. Shell Programming and Scripting

Help with /dev/null Please

Hello All and a Happy New year to yous guys. I'm running the below command on my AIX box and it keeps giving me the message that the file doesn't exist. I know the file don't exist, but I don't want to see the error. 2>/dev/null doesn't work. bash-3.00$ ls -l C* | wc -l 2>/dev/null ls:...

10. Shell Programming and Scripting

2>/dev/null

Friends have the following problem a search may not find anything which would correct example: ls -ltr *prueba.txt | nawk '{ print $9 }' > Procesar.dat 2>/dev/null When he finds nothing gives me the following error ls: prueba.txt: No such file or directory because 2> / dev / null...

LEARN ABOUT OSF1

mkmanifest

mkmanifest(1)						      General Commands Manual						     mkmanifest(1)

NAME

       mkmanifest - mtools utility to create a shell script to restore UNIX file names from DOS

SYNOPSIS

       mkmanifest [files]

OPTIONS

       None

OPERANDS

       A list of UNIX file names to be converted to DOS name format.

DESCRIPTION

       The  mkmanifest	command creates a shell script that aids in the restore of UNIX file names that were overwritten by DOS file name restric-
       tions.  DOS file names are uppercase only, cannot exceed 8 character names, 3 character extensions and do not support device names or  non-
       alphanumeric characters.

       Not all UNIX file names are supported in the DOS world.	The mtools commands may have to change UNIX names to fit the DOS file name conven-
       tions.  Most commands provide the verbose option (-v), that displays new file names if they have been changed. The  following  table  shows
       some examples of file name conversions:

       -----------------------------------------------
       UNIX name     DOS name	Reason for the change
       -----------------------------------------------
       thisisatest   THISISAT	file name too long
       file.stuff    FILE.STU	extension too long
       prn.txt	     XRN.TXT	PRN is a device name
       .abc	     X.ABC	null file name
       hot+cold      HOTXCOLD	illegal character
       -----------------------------------------------

EXIT STATUS

       The following exit values are returned: Success.  Failure.

EXAMPLES

       Assume you have the following UNIX files that you want to copy to a DOS diskette using the mcopy command.

       very_long_name 2.many.dots illegal: good.c prn.dev Capital

       The mcopy command converts these file names to the following:

       very_lon 2xmany.dot illegalx good.c xprn.dev capital

       To restore the previous file names, use the mkmanifest command as follows: mkmanifest very_long_name 2.many.dots illegal:       
				  good.c prn.dev Capital > manifest

       The  previous  mkmanifest command line produces the following: mv very_lon very_long_name mv 2xmany.dot 2.many.dots mv illegalx illegal: mv
       xprn.dev prn.dev mv capital Capital

       The good.c file name did not require conversion, hence it was not included in the output.

       If these files were copied from diskette to another UNIX system, and you wanted to restore the original names, retain a copy of	the  mani-
       fest file (captured output) so that it can be used to convert the file names again.

FILES

       Executable file

SEE ALSO

       Commands: mcopy(1), mtools(1)

																     mkmanifest(1)

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1. UNIX for Dummies Questions & Answers

>/dev/null

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2. UNIX for Advanced & Expert Users

Q1 :/dev/null Q2 -A

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3. Shell Programming and Scripting

> /dev/null

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4. Solaris

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

Discussion started by: civic2005