Meaning of 2>/dev/null/ <<EOF ? Post: 302517578

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1. UNIX for Dummies Questions & Answers

/dev/null

Hi , I am importing some table from /dev/null i dont understand what is /dev/null Sorry i am new to UNIX sam71

2. UNIX for Advanced & Expert Users

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. 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 ??

4. Shell Programming and Scripting

/dev/null what is the use of it?

when do you use the path /dev/null

5. Shell Programming and Scripting

Meaning of "> /dev/null 2>&1"

Hi, I am new into UNIX shell scripting and I am wondering what is the meaning of the below text which appears at the end of each line in the ".sh" file: > /dev/null 2>&1 For example, the line below: sh $HOME/stats/Rep777/Act_777.sh omc omc > /dev/null 2>&1 I know for sure what "sh...

6. 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

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Meaning of mount /dev/dsk/c... /mnt

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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 SUSE

uadmin

uadmin(1M)																uadmin(1M)

NAME

       uadmin - administrative control

SYNOPSIS

       /usr/sbin/uadmin cmd fcn [mdep]

       /sbin/uadmin cmd fcn [mdep]

       The uadmin command provides control for basic administrative functions. This command is tightly coupled to the system administration proce-
       dures and is not intended for general use. It may be invoked only by the super-user.

       Both the cmd (command) and fcn (function) arguments are converted to integers and passed to the	uadmin	system	call.  The  optional  mdep
       (machine  dependent) argument is only available for the cmd values of 1 (A_REBOOT), 2 (A_SHUTDOWN), or 5 (A_DUMP). For any other cmd value,
       no mdep command-line argument is allowed.

       When passing an mdep value that contains whitespaces, the string must be grouped together as a single argument enclosed within quotes,  for
       example:

       uadmin 1 1 "-s kernel/unix"

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

       uadmin(2), attributes(5)

       On  systems, shutting down the system by means of uadmin does not update the boot archive. Avoid using this command after manual editing of
       files such as /etc/system or driver.conf(4).

								    11 Apr 2005 							uadmin(1M)

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/dev/null

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Q1 :/dev/null Q2 -A

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

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/dev/null what is the use of it?

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