06-21-2012
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hey, I'm writing this bash script that will test print me many copies of the same program but with different combos of 4 variables being between 1 and 100. Here's the code:
#! /bin/bash
x=0
for ((a=1; a < 101; a++))
do
for ((b=1; b < 101; b++))
do
for ((c=1; c < 101; c++))
do
for... (4 Replies)
Discussion started by: Silverlining
4 Replies
2. Shell Programming and Scripting
Hi all-
I've been fooling with this for a few days, but I'm rather new at this...
I have a bash variable containing a long string of various characters, for instance:
JUNK=this that the other xyz 1234 56 789
I don't know what "xyz" actually is, but I know that:
START=he other
and ... (2 Replies)
Discussion started by: rev66
2 Replies
3. Shell Programming and Scripting
Is there any way to do variable nesting using sh?
For example:
example_1="a test string"
example_2="another test"
example_3="etc..."
i=2
echo ${example_$i}
The shell reports:
sh: ${example_$i}: bad substitution
If not, maybe someone could suggest another method. Thanks in... (3 Replies)
Discussion started by: kevinl33
3 Replies
4. Shell Programming and Scripting
I have some troubles with variables and quotes...
I want:
if $URL is empty (no user input) go to http://www.localhost/index.php/ else add this string (search) "?s=+$URL"
EXAMPLE:
No user input
string= http://www.localhost/index.php/
User input = "unix"
string=... (3 Replies)
Discussion started by: aspire
3 Replies
5. Shell Programming and Scripting
I have the following line of code:
sed -i "/MatchText/ s/${tgrepLine}/${tNewLine}/" filename.outputfilename.output contains this:
blablabla
PATH=".:/home/root/bin/:/usr/local/bin/"
blablablaVariable ${tgrepLine} contains:
PATH=".:/home/root/bin/:/usr/local/bin/"
Variable ${tNewLine}... (3 Replies)
Discussion started by: inspire87
3 Replies
6. UNIX for Dummies Questions & Answers
Here's the input:
alpha, numeric or alphanumeric string ("line 1 string")
numeric string ("line 2 string")
numeric string ("line 3 string")
numeric string ("line 4 string")
...
where
- each numeric string is in a pattern that can be matched with RE but
- there can be any number of... (2 Replies)
Discussion started by: uiop44
2 Replies
7. Shell Programming and Scripting
I am trying to use two nested for loops to process some files and then create a new file using both variables in the output file name. I have several files in this naming style:
S1_L3_all_R1.fastq
S1_L3_all_R2.fastq
S1_L4_all_R1.fastq
S1_L4_all_R2.fastq
.
.
S1_L8_all_R1.fastq... (3 Replies)
Discussion started by: aminards
3 Replies
8. Shell Programming and Scripting
In a bash script I have:
LSCMD="find /project/media/ -mindepth 2 -maxdepth 2 -name \"files*pkg\""
ALL_PACKAGES=$( $LSCMD | sort 2>/dev/null)
But I get nothing returned. It's just all blank. If I run the find command in a terminal, I get dozens of hits.
I figure it's the way how I'm... (3 Replies)
Discussion started by: superbbrr
3 Replies
9. Debian
Hi Guys
I have another problem I'm trying to solve and hope that some one can help me here.
This is the scenario:
I have a file and I want to add a line on the 3rd line of the file using a bash script. but instead its adding the the bash variable $WEBSITE.
Below is the bash script I'm... (6 Replies)
Discussion started by: linuxjunkie
6 Replies
10. Shell Programming and Scripting
Hello,
I hope someone can hep with this. I use a skript to send multiline Data to a Monitoring system. Bu I'm not able to use linebreaks or escape sequences.
The skript is simple like that:
#!/bin/bash
var="Erste Zeile \n zweite Zeile \n Dritter Teil"
zabbix_sender -c... (17 Replies)
Discussion started by: mpmichael
17 Replies
LEARN ABOUT DEBIAN
syslogout
SYSLOGOUT(8) System Manager's Manual SYSLOGOUT(8)
NAME
syslogout - modular centralized shell logout mechanism
DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way
mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell.
It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con-
tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other
than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script.
For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his
$HOME/.bash_logout:
if [ -f /etc/syslogout ]; then
. /etc/syslogout
fi
If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent
that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a
login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for
illustration.
Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by
simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command.
Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory
which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to
match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo-
gout.d/ directory automatically disable sourcing of the system wide version.
Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time.
OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves.
SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x),
xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming.
If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan-
ion to syslogout.
BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack
than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better
becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we
take patches... ;-)
AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use
it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into
something more worthwhile than it currently is.
SYSLOGOUT(8)