Help with /dev/null Please Post: 302750789

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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 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

3. 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.

4. 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

5. 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 ??

6. 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

7. Shell Programming and Scripting

/dev/null what is the use of it?

when do you use the path /dev/null

8. 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

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:...

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...

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conspy

CONSPY(1)							      conspy								 CONSPY(1)

NAME

       conspy - virtual console spy tool

SYNOPSIS

       conspy [ options ] [ console ]

DESCRIPTION

       Conspy  allows the user to take control of a Linux virtual console.  The user can see what is displayed on the console and their keystrokes
       are sent to it.

       To exit from conspy press the escape key three times in quick succession.

COMMAND LINE

       -V, --version
	      Print the program's version and exit.

       -v, --viewonly
	      Don't send keystrokes to the virtual console.

       console
	      If supplied, console must be a number in the range 1 .. 63, corresponding to the virtual console device /dev/tty1 .. /dev/tty63.	If
	      not supplied the currently active virtual console is opened and tracked.

LIMITATIONS

       Conspy will not pass keystrokes to a virtual console whose keyboard is configured to send scan codes.  X configures its keyboard like this.
       If the terminal does not have at least 64 colours no colour will be displayed.  Conspy ignores the mouse.  Conspy  may  display	some  non-
       ASCII characters incorrectly.  Conspy does not handle displays larger than 16000 characters (eg 200 rows x 80 columns).

       Conspy  depends	on terminfo and curses working correctly for your terminal, and sometimes they don't.  Konsole is/was one example of where
       they don't.  Typing control-L will redraw the screen, which usually fixes the mess created.  It also sends a control-L to the virtual  con-
       sole, of course.

FILES

       /dev/ttyX, /dev/vc/X
	      The characters typed are sent to this device.  The latter is for devfs. It is only used if the former does not exist.

       /dev/vcsaX, /dev/vcc/aX
	      The display of the virtual console is read from here.  The latter is for devfs. It is only used if the former does not exist.

AUTHOR

       Russell Stuart, <russell-conspy@stuart.id.au>.

Version 1.8							     Apr 2011								 CONSPY(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

>/dev/null

Discussion started by: piltrafa

2. UNIX for Dummies Questions & Answers

/dev/null

Discussion started by: sam71

3. UNIX for Advanced & Expert Users

Q1 :/dev/null Q2 -A

Discussion started by: big123456

4. Shell Programming and Scripting

> /dev/null

Discussion started by: rrs

5. Solaris

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

Discussion started by: civic2005

6. Shell Programming and Scripting

/dev/null

Discussion started by: olaris

7. Shell Programming and Scripting

/dev/null what is the use of it?

Discussion started by: webmunkey23

8. UNIX for Dummies Questions & Answers

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

Discussion started by: glev2005

9. Shell Programming and Scripting

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

Discussion started by: jbmorrisonjr

10. Shell Programming and Scripting

2>/dev/null

Discussion started by: tricampeon81

LEARN ABOUT DEBIAN

conspy