Sponsored Content
Top Forums Shell Programming and Scripting Check the value of a variable Post 302620003 by Corona688 on Friday 6th of April 2012 06:10:44 PM
Old 04-06-2012
You forgot more spaces again.

"if[" is not the same command as "if" "["
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Check if variable is a number

If I have a variable $X, how do I check it is a number? Many thanks. (2 Replies)
Discussion started by: handak9
2 Replies

2. Shell Programming and Scripting

check for NULL variable

Hello I want to check for NULL variable.. but this is not working..please help thanks in advance esham (2 Replies)
Discussion started by: esham
2 Replies

3. Shell Programming and Scripting

How to check parameter variable?

Hello All, I have a script that will email out if the email address is specified as parameter 1. I am using ksh, and then tried the following : email=$1 Following did not work, I am getting error test -z $email test ${email:=" ") -eq " " test -n $email test ${?email} What... (4 Replies)
Discussion started by: negixx
4 Replies

4. Shell Programming and Scripting

How to check if a variable contains a .

Hi I am writing a bash script and would like to check is a variable contains a . or not ex. a=102 output ok a=1.02 output not ok Many thanks, (3 Replies)
Discussion started by: gekkos
3 Replies

5. Shell Programming and Scripting

check if a variable is not affected

Hi all, to check that a variable is not empty, I usually do: if ; then... or if ; then... what if I have a serie of variables and want to do the same test on all of them. How to do this in a single if statement? thank you (1 Reply)
Discussion started by: melanie_pfefer
1 Replies

6. UNIX for Dummies Questions & Answers

Check the value of a string variable

hi to all, i want to check the value of a variable that it contains characters. for example i try the following: if then ......... i just want to check that in the specific line that is a variable called "passline" has the entry "password". But it can contain also other characters in the... (4 Replies)
Discussion started by: omonoiatis9
4 Replies

7. Shell Programming and Scripting

Check if a variable is zero

I have seen many posts for this sort of problem but I just did not know how to use it for my issue. A number is assigned to a variable and I wanted to check if it is a zero or non zero. Example of my numbers are below: 000000000000000000000000000000000000000000000000... (8 Replies)
Discussion started by: soujiv
8 Replies

8. Shell Programming and Scripting

Check if a variable is having value

I have a script /root/asas with following contents. #!/bin/bash ha=`cat /etc/passwd | grep sandra` if ; then echo "Sandra is in /etc/passwd" echo "variable ha is $ha" else echo "Sandra is NOT in /etc/passwd" echo "variable ha is $ha" fi What... (3 Replies)
Discussion started by: anil510
3 Replies

9. Shell Programming and Scripting

How to check whether a variable is empty or contains some value?

hi, i want to check whether a a variable contains some value or is empty in a shell script. so if the variable contains some value i want to do some job and if the variable doesnt contain any value then i need to skip that job. here is a sample script read_filenames.sh contains ... (5 Replies)
Discussion started by: Little
5 Replies

10. Shell Programming and Scripting

Check variable

Hi people, I would like to start a review of my config variable to check whether they have been changed and if not then there is only an echo. If they have been changed to my other commands are executed. I hope you can help me. with best regards JPad edit: here my code if ;... (8 Replies)
Discussion started by: JPad
8 Replies
ANACRONTAB(5)						       Anacron Users' Manual						     ANACRONTAB(5)

NAME
/etc/anacrontab - configuration file for anacron DESCRIPTION
The file /etc/anacrontab describes the jobs controlled by anacron(8). Its lines can be of three kinds: job-description lines, environment assignments, or empty lines. Job-description lines are of one of these two forms: period delay job-identifier command @period_name delay job-identify command The period is specified in days, the delay in minutes. The job-identifier can contain any non-blank character, except slashes. It is used to identify the job in Anacron messages, and as the name for the job's timestamp file. The command can be any shell command. The fields can be separated by blank spaces or tabs. The period_name can only be set to monthly at the present time. This will ensure jobs are only run once a month, no matter the number of days in this month, or the previous month. Environment assignment lines are of the form: VAR = VALUE Spaces around VAR are removed. No spaces around VALUE are allowed (unless you want them to be part of the value). The assignment takes effect from the next line to the end of the file, or to the next assignment of the same variable. Empty lines are either blank lines, line containing white-space only, or lines with white-space followed by a '#' followed by an arbitrary comment. You can continue a line onto the next line by ending it with a ''. SEE ALSO
anacron(8) The Anacron README file. AUTHOR
Itai Tzur <itzur@actcom.co.il> Currently maintained by Pascal Hakim <pasc@(debian.org|redellipse.net)>. Pascal Hakim 2004-07-11 ANACRONTAB(5)
All times are GMT -4. The time now is 07:16 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy