What is /dev/tty /dev/null and /dev/console Post: 302155233

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1. Programming

sniff /dev/tty

hello all, Being root, I would like to log user activity (also multiple root activity), i don't really like history file based logging, lets assume that users have access to their .profile. I would like to write a monitoring daemon in C that would capture /dev/ttys, so I need to do a...

2. 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. UNIX for Dummies Questions & Answers

Reading password from /dev/tty

hi, From the below script: ##########################################pwd_auth.sh######################################################################################## #Author: Pandeeswaran Bhoopathy #Written on:26th Jan 2012 2:00PM #This script describes the feature of stty and illustrates...

4. 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. Solaris

Lun remove, stuck in /dev/dsk and /dev/rdsk

So, we removed a LUN from the SAN and the system is refusing to remove the references to it in the /dev folder. I've done the following: devfsadm -Cv powermt -q luxadm -e offline <drive path> luxadm probe All those commands failed to remove the path. The drive stills shows up as <drive...

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Difference between /dev/hdisk and /dev/rhdisk

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Hello AIXians, I can't boot my AIX, it hangs and stops at the code error: 0518 After searching google, I knew the problem is due to problems in File Systems. So the solution is booting from any bootable media, then run these commands in maintenance mode: #fsck -y /dev/hd4 #fsck -y...

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Automating partitioning setup of /dev/sda on /dev/sdc

Objective: To recreate the partitioning setup of /dev/sda on /dev/sdc How would I parse the below information and initialize variables (an array?) that can be used to build sgdisk commands in a script, regardless of the number of partitions? Something along the lines of: sgdisk -n...

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Dev/urandom and dev/random missing in HP-UX

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LEARN ABOUT SUSE

chkstat

CHKSTAT(8)					      Tool to check and set file permissions						CHKSTAT(8)

NAME

       chkstat - Tool to check and set file permissions

SYNOPSIS

       chkstat [--set|-set] [--noheader] [[--examine file ]...]  [[--files filelist ]...]  [[--root directory ]...]  permission-file ...

DESCRIPTION

       The program /usr/bin/chkstat is a tool to check and set file permissions.

       Multiple  permissions  files can be given on the commandline.  If the permission files contain multiple entries for a single file, the last
       entry found will be used.

   General Options
       --set, -set
	      This option enables setting the file permissions, the default is to check and warn only.

       --noheader
	      Omit printing the output header lines.

       --examine file
	      Check permissions for this file and not all files listed in the permissions files.

       --files filelist
	      Check permissions for the files listed in filelist and not for all files listed in the permissions files.

       --root directory
	      Prefix the files given in the permissions files by this directory.

EXAMPLE

       The command

	      chkstat -set /etc/permissions

       will parse the file /etc/permissions and set the access mode and the user- and group memberships each file listed. The format for the input
       file is

       FILEPATH OWNER:GROUP MODE

       and wildcards are not supported for the filepath. Lines starting with '#' and empty lines are treated as comments.

COPYRIGHT

       1996-2003 SuSE Linux AG, Nuernberg, Germany.

       2008 SUSE LINUX Products GmbH

AUTHORS

       Reinhold Sojer, Ruediger Oertel, Michael Schroeder

       Useful changes and additions by Tobias Burnus

3rd Berkeley Distribution					    2008-04-17								CHKSTAT(8)

10 More Discussions You Might Find Interesting

1. Programming

sniff /dev/tty

Discussion started by: wayward

2. UNIX for Dummies Questions & Answers

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

Discussion started by: glev2005

3. UNIX for Dummies Questions & Answers

Reading password from /dev/tty

Discussion started by: pandeesh

4. Shell Programming and Scripting

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

Discussion started by: jbmorrisonjr