Sponsored Content
Top Forums Shell Programming and Scripting For x in a b c; { list; } (in lieu of do list; done) works (in bash) - why and how? Post 302765979 by RudiC on Monday 4th of February 2013 03:04:21 AM
Old 02-04-2013
For x in a b c; { list; } (in lieu of do list; done) works (in bash) - why and how?

In this post I came across the cited construct. It works! while ... { list; } does not.
man bash does not mention it (or, better, I didn't see it).

Any reason for / behind this? Am I missing something?
 

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

[bash]Stripping lines from a list

Hello! I have a script that is (among other things) doing the following: list=/tmp/list1.txt ncftpls -u <user> -p <password> -x "-l1" server.domain.tld > $list cat $list | nl echo "Choose file: " read file cat /tmp/list1.txt | nl | grep $file | sed -e "s/$file//g" -e "s/ //g" | column -t... (8 Replies)
Discussion started by: noratx
8 Replies

2. Shell Programming and Scripting

Make a list in bash out of arguments

Hello, I have a very stupid/simple problem, but for some reason I cannot figure out...and I need your help! I am writting a bash scrip that should be executed using "my_script X Y Z T" where X Y Z and T can be any string, but there can be any number of arguments. I want my script to do... (4 Replies)
Discussion started by: jolecanard
4 Replies

3. Shell Programming and Scripting

Splitting a list @list by space delimiter so i can access it by using $list[0 ..1..2]

EDIT : This is for perl @data2 = grep(/$data/, @list_now); This gives me @data2 as Printing data2 11 testzone1 running /zones/testzone1 ***-*****-****-*****-***** native shared But I really cant access data2 by its individual elements. $data2 is the entire list, while $data,2,3...... (1 Reply)
Discussion started by: shriyer
1 Replies

4. Shell Programming and Scripting

How to find the X highest values in a list depending on the values of another list with bash/awk?

Hi everyone, This is an exemple of inpout.txt file (a "," delimited text file which can be open as csv file): ID, Code, Value, Store SP|01, AABBCDE, 15, 3 SP|01, AABBCDE, 14, 2 SP|01, AABBCDF, 13, 2 SP|01, AABBCDE, 16, 3 SP|02, AABBCED, 15, 2 SP|01, AABBCDF, 12, 3 SP|01, AABBCDD,... (1 Reply)
Discussion started by: jeremy589
1 Replies

5. UNIX for Advanced & Expert Users

Bash-Completion, one list shown, the other not.

Heyas I'm trying to read out a file which contains a variable and use that list to complete a bash command. Difficult part on this is, that 2 (actualy 3) different lists are to be used, but the 'dynamic' ones from the external file dont work properly. It only seems to work with the list... (2 Replies)
Discussion started by: sea
2 Replies

6. Shell Programming and Scripting

Bash compare a list of file

Dear all, I believe this is a Bash basic question... I am bit ashamed for asking actually... I want to create a Bash script that compares 2 different folders: 1) work_folder and 2) work_folder.git #!/bin/bash FOLDER_NAME=`pwd | awk -F/ '{ print $NF }' | awk -F. '{ print $1 }'` ... (6 Replies)
Discussion started by: freddie50
6 Replies

7. Shell Programming and Scripting

Bash to list all folders in a specific directory

The below bash is trying to list the folders in a specific directory. It seems close but adds the path to the filename, which basename could strip off I think, but not sure why it writes the text file created? This list of folders in the directory will be used later, but needs to only be the... (5 Replies)
Discussion started by: cmccabe
5 Replies

8. Shell Programming and Scripting

Bash - re-ordering list of parameters

Hello. I have a script that writes parameters in alphabetic order. But I have a parameter which have 3 lines. There is no continuation character ( '\' ). Each of the three lines finish with 'cr'. But line 2 and 3 of the concerning parameter start with a tab char (but should be one or more... (7 Replies)
Discussion started by: jcdole
7 Replies
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)
All times are GMT -4. The time now is 06:31 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy