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. UNIX for Dummies Questions & Answers

Hi all, I ve a script like.... TBL=employee sql=`cat abhi.sql` \\ abhi.sql contains ------- select a from $TBL echo $TBL echo $sql SQL=`echo $sql` echo $SQL now i want SQL as select a from employee and as select a from $TBL How can I achieve this? Help appriciated (3 Replies)

3. Shell Programming and Scripting

Hi,, this is returning true in all cases..( other than 10 dig number also) what could be wrong?? (2 Replies)

4. Shell Programming and Scripting

Hi, I have one file like 00123. And this file name is generated as a sequence. So how can I confirm the generated file name is a number, not a special character or alphabets. Can anybody help me out. Thanks in advance. (3 Replies)

5. Shell Programming and Scripting

Hi, I have a file with data as given $cat file1.txt 123 234 23e 234.456 234.876e 345.00 I am checking if the values are proper integers using the command. nawk -F'|' 'int($1)!=$1 {printf "Error in field 1|"$0"\n"}' file1.txt This is checking for only integers ( without... (10 Replies)

6. Shell Programming and Scripting

Hey, I am trying to check if an integer is even in a tcsh script This is what I am running now set lattest = ` echo $latmin "%2" | bc -l ` echo $lattest if ( $lattest == 0 ) then echo "min is already even" else if ( $lattest =! 0 ) then set latmin = ` echo $latmin "+1" |... (2 Replies)

7. Shell Programming and Scripting

Hey i got trivial question but i cant figure it out. I want to grep a file for multiple unknown parameters. The user will enter these parameters at the command line. For example... ./program red apple filename This would grep for the phrase red apple. But i cant just do $1 $2 because the... (8 Replies)

8. Shell Programming and Scripting

Hello, I would like to control and check the right parameters $1 must have 4 alphabetics digits among eora qora pora fora $2 must have 2 numerics digits 00 to 11 $3 must have 2 numerics digits 00 to 59 $4 must have 10 characters alpha numerics as 2013-02-26 For example : In case 5) if i... (1 Reply)

9. Shell Programming and Scripting

Hello, I would like to control and check the right parameters $1 must have 4 alphabetics digits among eora qora pora fora $2 must have 2 numerics digits 00 to 11 $3 must have 2 numerics digits 00 to 59 $4 must have 10 characters alpha numerics as 2013-02-26 For example : In case 5) if i... (15 Replies)

10. UNIX for Dummies Questions & Answers

Hello, May i please know how do i check if the given input argument is one of the listed numbers then success else failure. I am using bash shell. if then echo "success" else echo "failure" fi Thank you. (2 Replies)