First argument is numeric or not

10 More Discussions You Might Find Interesting

1. 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...

2. 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...

3. 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

4. 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

5. 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. 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...

7. 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"...

8. 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?

9. 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.

10. 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

LEARN ABOUT DEBIAN

escape

escape(1)							Mail Avenger 0.8.3							 escape(1)

NAME

       escape - escape shell special characters in a string

SYNOPSIS

       escape string

DESCRIPTION

       escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.

EXAMPLES

       The following is a contrived example showing how one can unintentionally end up executing the contents of a string:

	   $ var='; echo gotcha!'
	   $ eval echo hi $var
	   hi
	   gotcha!
	   $

       Using escape, one can avoid executing the contents of $var:

	   $ eval echo hi `escape "$var"`
	   hi ; echo gotcha!
	   $

       A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables.  For
       example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:

	   #!/bin/sh
	   formail -x to -x cc -x resent-to -x resent-cc 
	       | fgrep "$1" > /dev/null 
		   && exit 0
	   echo "<$1>.. address does not accept blind carbon copies"
	   exit 100

       To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
       script:

	   bodytest reject_bcc `escape "$RECIPIENT"`

SEE ALSO

       avenger(1),

       The Mail Avenger home page: <http://www.mailavenger.org/>.

BUGS

       escape is designed for the Bourne shell, which is what Mail Avenger scripts use.  escape might or might not work with other shells.

AUTHOR

       David Mazieres

Mail Avenger 0.8.3						    2012-04-05								 escape(1)

UNIX for Dummies Questions & Answers