I'm having a spot of trouble. I'm trying to test three variables for a NULL value in a bash shell script. If a null value is detected in the variable to set it to set the variable to a default value.
hi friends,
i'm new to shell scripting,can i know how to change the environment variables without altering anythng in .bash_profile as the change in it is for a specific user but i want the change to be available to every user who logs in.
bye. (1 Reply)
hey guys. i'm new to shell scripting but not new to programming. i want to write a script that will take all the files in the current directory that end with a particular filetype and change all their names to a number in order. so, it would take all the jpg files and sort them in alphabetical... (30 Replies)
In FORMAT->ANALYZE->SETUP there's a couple variables you can set for the various functions. However, everytime I exit format it reverts back to the defaults. Is there a file I can edit somewhere to change these default settings? (0 Replies)
Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it.
To make a long story short around 20K pieces of... (2 Replies)
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Hi,
I need help on for loop need to add domain and IP
In domain list
1.com
2.com
3.com
In Ip list
1.1.0.1
1.2.0.1
1.3.0.1
1.com 1.1.0.1
2.com 1.2.0.1
3.com 1.3.0.1
I need to excute this command (4 Replies)
Hi All please help if possible. I am a Unix novice. I have a similar question to the one posted by yonderboy at about a year ago. However his solution does not work for me.
The pseudo code for my problem is as follows:
for fund in 1 2 3 4
if (FTP is successfully) then
FILE_SENT_fund... (2 Replies)
Hi,
I would like to write a loop to change the names of files in a directory. The files are called data1.txt through data1000.txt. I'd like to change their names to a1.txt through a1000.txt. How do I go about doing that? Thanks! (2 Replies)
#!/bin/bash
X=$(</home/cogiz/computerhand.txt) # (3S 8C 2H 6D QC 8S 4H 5H)
Y=$(</home/cogiz/topcardinplay.txt) # KS
A=( "${Y::1}" )
B=( "${Y:1}" )
for e in ${X}; do
if ]; then # searching for valid cards K,S or 8
... (0 Replies)
Discussion started by: cogiz
0 Replies
LEARN ABOUT DEBIAN
checkbashisms
CHECKBASHISMS(1) General Commands Manual CHECKBASHISMS(1)NAME
checkbashisms - check for bashisms in /bin/sh scripts
SYNOPSIS
checkbashisms script ...
checkbashisms --help|--version
DESCRIPTION
checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
of bashisms. It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.
Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported by POSIX";
this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.
In cases where POSIX and Debian Policy disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
options for stricter checking.
OPTIONS --help, -h
Show a summary of options.
--newline, -n
Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)
--posix, -p
Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).
--force, -f
Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
to be a shell wrapper).
--extra, -x
Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
tive which may be ignored. For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.
--version, -v
Show version and copyright information.
EXIT VALUES
The exit value will be 0 if no possible bashisms or other problems were detected. Otherwise it will be the sum of the following error val-
ues:
1 A possible bashism was detected.
2 A file was skipped for some reason, for example, because it was unreadable or not found. The warning message will give details.
SEE ALSO lintian(1).
AUTHOR
checkbashisms was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
Julian Gilbey <jdg@debian.org>.
DEBIAN Debian Utilities CHECKBASHISMS(1)