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

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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...

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/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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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...

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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:...

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LEARN ABOUT DEBIAN

cgconfigparser

CGCONFIGPARSER(8)						 libcgroup Manual						 CGCONFIGPARSER(8)

NAME

       cgconfigparser - setup control group file system

SYNOPSIS

       cgconfigparser [-h] [-l <filename>] [-L <directory>] [...]

OPTIONS

       -h, --help
	      Displays help.

       -l, --load=FILE
	      Parses  the  control  groups  configuration  file Sets up the control group file system defined by the configuration file and mounts
	      mount points defined by the configuration file.  The format of the file is described in cgconfig.conf. This option can be used  mul-
	      tiple times and can be mixed with -L option.

       -L, --load-directory=DIR
	      Finds  all  files in given directory and parses them in alphabetical order like they were specified by -l option. This option can be
	      used multiple times and can be mixed with -l option.

       -a <agid>:<auid>
	      defines the default owner of the rest of the defined control group's files. These users are allowed to set subsystem parameters  and
	      create subgroups.  The default value is the same as has the parent cgroup.

       -d, --dperm=mode
	      sets the default permissions of a control groups directory.  The permissions needs to be specified as octal numbers e.g.	-d 775.

       -f, --fperm=mode
	      sets  the default permissions of the control group files.  The permissions needs to be specified as octal numbers e.g.  -f 775.  The
	      value is not used as given because the current owner's permissions are used as an umask (so 777 will set group  and  others  permis-
	      sions to the owners permissions).

       -s, --tperm=mode
	      sets the default permissions of the control group tasks files.  The permissions needs to be specified as octal numbers e.g.  -f 775.
	      The value is not used as given because the current owner's permissions are used as an umask (so 777 will set group and  others  per-
	      missions to the owners permissions).

       -t <tuid>:<tgid>
	      defines  the default owner of tasks file of the defined control group. I.e. this user and members of this group have write access to
	      the file.

SEE ALSO

       cgconfig.conf (5)

Linux								    2009-03-16							 CGCONFIGPARSER(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