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Full Discussion: Q1 :/dev/null Q2 -A
Top Forums UNIX for Advanced & Expert Users Q1 :/dev/null Q2 -A Post 88916 by big123456 on Thursday 10th of November 2005 01:16:32 AM
Old 11-10-2005
Manymany thanks to all.
 

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>/dev/null

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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)
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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... (4 Replies)
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PS(1)							      General Commands Manual							     PS(1)

NAME
ps - process status SYNOPSIS
ps [-alxU] [kernel mm fs] OPTIONS
-a Print all processes with controlling terminals -l Give long listing -x Include processes without a terminal EXAMPLES
ps -axl # Print all processes and tasks in long format DESCRIPTION
Ps prints the status of active processes. Normally only the caller's own processes are listed in short format (the PID, TTY, TIME and CMD fields as explained below). The long listing contains: F Kernel flags: 001: free slot 002: no memory map 004: sending; 010: receiving 020: inform on pending signals 040: pending signals 100: being traced. S State: R: runnable W: waiting (on a message) S: sleeping (i.e.,suspended on MM or FS) Z: zombie T: stopped UID, PID, PPID, PGRP The user, process, parent process and process group ID's. SZ Size of the process in kilobytes. RECV Process/task on which a receiving process is waiting or sleeping. TTY Controlling tty for the process. TIME Process' cumulative (user + system) execution time. CMD Command line arguments of the process. The files /dev/{mem,kmem} are used to read the system tables and command line arguments from. Terminal names in /dev are used to generate the mnemonic names in the TTY column, so ps is independent of terminal naming conventions. PS(1)
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