Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: First argument is numeric or not
Top Forums UNIX for Dummies Questions & Answers First argument is numeric or not Post 302249611 by rubin on Tuesday 21st of October 2008 06:25:53 PM
Old 10-21-2008
Quote:
Originally Posted by darkhider
Hi everyone, I want my script to check if the first argument has only numbers or not...
if [ $1 = ( grep "[^0-9]*") ]
then
...
It might be easier if you use extended grep - egrep,

Code:
if  echo  "$1"  | egrep "^[0-9]+$"
 then
   echo "The first argument is numeric"
 else
...

Last edited by rubin; 10-21-2008 at 07:44 PM..
 

10 More Discussions You Might Find Interesting

1. Solaris

ps: 65535 is an invalid non-numeric argument for -p option

I want to figure out what is the reason of error message I have in Solaris 10. Why Solaris 10 dosn't recognize 65535? ps: 65535 is an invalid non-numeric argument for -p option usage: ps 'format' is one or more of: Thank you (5 Replies)
Discussion started by: gogogo
5 Replies

2. UNIX for Dummies Questions & Answers

non-numeric argument

quick question, I am trying to run this simple equation expr 2048 / 2.354 but get a "expr: non-numeric argument" error when ever its run. I believe it may be caused by the decimal point but I do not know how to remedy it. (3 Replies)
Discussion started by: TiredOrangeCat
3 Replies

3. Shell Programming and Scripting

Perl code to differentiate numeric and non-numeric input

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

4. UNIX for Dummies Questions & Answers

Non Numeric Argument Error

hi there, I was recently introduced to this site by a friend. I hope you guys can help with a code error i can't seem to debug.I can get to add two different data types together. A snippet of the code is below: echo -n "Enter Your MOnthly Investment" read Inv PIP= $(echo "scale=2; 10 / 100"... (4 Replies)
Discussion started by: Allenzo
4 Replies

5. Shell Programming and Scripting

get positive number n as argument script must calculate the factorial of its argument

Can someone please help me with this SHELL script? I need to create a script that gets a positive number n as an argument. The script must calculate the factorial of its argument. In other words, it must calculate n!=1x2x3x...xn. Note that 0!=1. Here is a start but I have no clue how to... (3 Replies)
Discussion started by: I-1
3 Replies

6. Shell Programming and Scripting

expr: non-numeric argument

Hi all, i am facing the error "expr: non-numeric argument" when i use the expr command. Following is the expression which i want to execute HR=$(echo `date +%H`) MIN=$(echo `date +%M`) TOT_MIN=`expr "$HR" \* 60+$MIN` | bc echo $TOT_MIN Here I am being reported with the error expr:... (6 Replies)
Discussion started by: sparks
6 Replies

7. UNIX for Dummies Questions & Answers

Find and Replace random numeric value with non-numeric value

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)
Discussion started by: Bahf1s
6 Replies

8. Shell Programming and Scripting

Numeric argument required

Hi, How to return the string "y" to the calling function. Getting the below error when function returns the value. return: y: numeric argument required With Regards (2 Replies)
Discussion started by: milink
2 Replies

9. Shell Programming and Scripting

Cannot compare argument in if statement in csh/grep command if argument starts with “-“

If ($argv == “-debug”) then Echo “in loop” Endif But this is not working. If I modify this code and remove “-“, then it works. Similarly I am getting problem using grep command also Grep “-debug” Filename Can someone please help me on how to resolve these... (1 Reply)
Discussion started by: sarbjit
1 Replies

10. Shell Programming and Scripting

Expr: non-numeric argument syntax error on line 1, teletype

Hi, I tried to look up the issue i'm experiencing, but i'm confused what's wrong with my script. After executing the script I'm getting the following error expr: non-numeric argument syntax error on line 1, teletype After some research, it seems that the problem relates to bc. I have... (1 Reply)
Discussion started by: nms
1 Replies

LEARN ABOUT SUSE

xzfgrep

XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME

       xzgrep - search compressed files for a regular expression

SYNOPSIS

       xzgrep [grep_options] [-e] pattern file...
       xzegrep ...
       xzfgrep ...
       lzgrep ...
       lzegrep ...
       lzfgrep ...

DESCRIPTION

       xzgrep  invokes	grep(1)  on  files  which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options
       specified are passed directly to grep(1).

       If no file is specified, then the standard input is decompressed if necessary and fed  to  grep(1).   When  reading  from  standard  input,
       gzip(1) and bzip2(1) compressed files are not supported.

       If  xzgrep  is  invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1).  The same applies to names lzgrep, lze-
       grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

ENVIRONMENT

       GREP   If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).

SEE ALSO

       grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)

Tukaani 							    2009-07-05								 XZGREP(1)
All times are GMT -4. The time now is 02:12 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy