1. Shell Programming and Scripting

Hi, How can I check numeric value in shell? I am passing one parameter (integer) and I want to restrict any other characters except 0-9. ./script xyz 10 Here 2nd parameter (10) should be integer only. Can anyone help on this? Malay (6 Replies)

2. Shell Programming and Scripting

Hi All, Is there any code in Perl which can differentiate between numeric and non-numeric input? (11 Replies)

3. Shell Programming and Scripting

Hi, How to check whether an input to a shell script contain only numeric values. Is there any way to check against the following characters. & ( ) | \ " ' < > ` I've used the following way. echo $1 | grep "\{2\}$" if then (12 Replies)

4. Shell Programming and Scripting

Is there a simple way of determining whether a command line arguement is numeric or not?? I tried a search and didn't find anything similar... This is the 2nd time I've made this post.... It didn't appear that the first one showed up ?? Sorry if this is a duplicate... (1 Reply)

5. Shell Programming and Scripting

Is there an easy way using a command or other routine for testing whether an argument on the command line is numeric? Just want to validate... I ran a search and didn't find a similar question.... Thx (3 Replies)

6. UNIX for Dummies Questions & Answers

Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is: 1702938475,SNU022,201004 the first 10 numbers always begin with 170 (6 Replies)

7. Shell Programming and Scripting

Using shell, I have a variable, how can I check that variable for a numeric value such as "41.0"? My program needs to do one things if the numeric value is found, and another if something else such as a string of letter is found. is there a specific character that denotes a numeral? The... (2 Replies)

8. Shell Programming and Scripting

I want to calculate the following expression in script: val=179584.0 ($val *3*16384)/(1073741824) $val will have a floating value. Thanks! I tried with following: n=$(echo |awk '{ print $val*3*16384 }') n=$(echo |awk '{ v=$val; print $v*3*16384 }') expr $val \* 3.0 \*... (10 Replies)

9. Shell Programming and Scripting

Hi all, I have a file like this ID 3BP5L_HUMAN Reviewed; 393 AA. AC Q7L8J4; Q96FI5; Q9BQH8; Q9C0E3; DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot. DT 05-JUL-2004, sequence version 1. DT 05-SEP-2012, entry version 71. FT COILED 59 140 ... (1 Reply)

10. UNIX for Dummies Questions & Answers

Hi I have a file: r58778.3|SOURCES={KEY=f665931a...,fw,221-705}|ERRORS={16_1:T,30_1:T,56_1:C,57_1:T,59_1:A,101_1:A,115:-,158_1:C,186_1:A,204:-,271_1:T,305:-,350_1:C,368_1:G,442_1:C,472_1:G,477_1:A}|SOURCE_1="Contig_1092402550638"(f665931a359e36cea0976db191ff60ff09cc816e) I want to retain... (15 Replies)