1. UNIX for Dummies Questions & Answers

I'm having a problem when the first line or first character of a file is blank. I need to get rid of both of them when they occur but don't want to delete the line. Does anyone have any suggestions? (7 Replies)

2. Shell Programming and Scripting

if $1 = "123x456", how can I test for the non-numeric character 'x' in that string. I've tried expr with "" but it did not find the x. Any ideas? Can this perhaps be done with sed? Thanks. (2 Replies)

3. Shell Programming and Scripting

how can i check whether variable contains only character from a-z or A-Z....if my variable contains any alpha numeric, numeric or any character with some special one i.e. *%&@! etcetera etcetera....then it should show me please enter only characters...... Let my variable var1="abc77}|" then... (9 Replies)

4. AIX

i am a newbie to shell script,so i want a kshell script in which i need to check for a particular character inside a file through conditional looping(like if ,case,while)and if that character exists ,then substitute a given character to that character. consider a file test.txt,inside the file... (1 Reply)

5. Shell Programming and Scripting

Below is the abstract of the script which is working fine. if ] then error_process "Invalid month format." return 1 fi I am doing validation for month and it errors if the value is > 12 or < 0. In addition, I want to add another condition to error if it... (2 Replies)

6. Shell Programming and Scripting

hi, I would like to calculate number of character for a number, for exemple : 1200 --> there are 4 characters , 120001 -> 5 characters (4 Replies)

7. Shell Programming and Scripting

Hi, I have a variable and to it always alphanumeric value will be assigned. If the value has any special characters in it then in the if statement it should exit like below if (value has any speacial character) then exit else .... fi can any one suggest how to acheive this? (4 Replies)

8. UNIX for Dummies Questions & Answers

i have a veriable set var1 set var2 = abcd how can i check if var 1 is empty and if var 2 is not empty ??? (2 Replies)

9. Shell Programming and Scripting

deleting (0 Replies)

10. Shell Programming and Scripting

I am working on a script to check the var on all of my systems. Can someone help me fix it to work better or give me suggestions. #!/bin/ksh IN=/path/to/list_of_workstations.txt while read hostnames do if ping $hostnames 1 | grep alive > /dev/null then percent=`ssh -q... (3 Replies)