1. UNIX for Dummies Questions & Answers

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

2. Shell Programming and Scripting

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

3. Shell Programming and Scripting

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)

4. Shell Programming and Scripting

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)

5. UNIX for Dummies Questions & Answers

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)

6. Shell Programming and Scripting

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)

7. Shell Programming and Scripting

#!/bin/sh echo "Running Script to capture ORACLE Erros" # Change Directory to the actual logs path cd /home/nv8510/lognew err_var=`grep -in "ORA-" *` if then echo "THESE ARE THE ORACLE ERROR OCCURED" echo "$err_var" echo... (7 Replies)

8. Shell Programming and Scripting

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)

9. Shell Programming and Scripting

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)

10. Shell Programming and Scripting

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)