Sponsored Content
Top Forums Shell Programming and Scripting Korn expr substr fails for non-numeric value Post 302382787 by cfajohnson on Friday 25th of December 2009 01:08:57 PM
Old 12-25-2009
Quote:
Originally Posted by Scrutinizer
If you know you can run it on all the machines that the scripts need to run on, I most certainly would. ksh88 is so eh... 1988 Smilie

And ksh93 syntax is less portable.

This function tests whether its first argument is a positive integer in any Bourne-type shell:

Code:
is_int()
{
  case $1 in
     *[!0-9]*|"") return 1 ;;
  esac
}

 

10 More Discussions You Might Find Interesting

1. 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

2. Shell Programming and Scripting

substr() thru awk Korn Shell Script

Hi, I am new stuff to learn substr() function through awk for writing the Korn shell script. Is there a way to copy from XXXX1234.ABCDEF to XXX1234 file names without changing both data files? I appreciate your time to response this email. Thanks, Steve (4 Replies)
Discussion started by: sbryant
4 Replies

3. Shell Programming and Scripting

test expr VS [ expr ]

What is the difference between test expr VS . For example : if test 5 -eq 6 echo "Wrong" and if echo "Wrong" bot will give the same output as Wrong. Now, what is the difference between these two? though they are producing the same result why we need two? Any answer will be... (2 Replies)
Discussion started by: ashok.g
2 Replies

4. Shell Programming and Scripting

help required for 'expr substr' function

hi iam trying to extract a certain portion of the string whose value is stored below,but am getting syntax eror.The command is shown below for file in GMG_BASEL2*.txt do m1= cat reporting_date.txt year= expr substr $m1 1 2 echo $year done m1 has date 10/31/2009 but this vale... (6 Replies)
Discussion started by: jagadeeshn04
6 Replies

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 Replies)
Discussion started by: sparks
6 Replies

6. 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

7. Shell Programming and Scripting

awk substr fails

Hi all, I want to get each line of a data file from position 464 plus 8 characters. I tried in two different ways, and the results were different. I'd like to know why. First method, using awk: awk '{print substr($0,464,8)}' CONCIL_VUELTA_ALF_100112_0801.okSecond method, using scripting:... (5 Replies)
Discussion started by: AlbertGM
5 Replies

8. Shell Programming and Scripting

Error with expr - "expr: syntax error"

Hi All, I'm writing a shell script in KSH, where I want to store the filename, total record count and actual record count of all the source files. The source files reside in 4 different sub-folders under the same root folder. Below is code: #!/usr/bin/ksh... (6 Replies)
Discussion started by: jagari
6 Replies

9. UNIX for Dummies Questions & Answers

Substr

awk '/^>/{id=$0;next}length>=7 { print id, "\n"$0}' Test.txt Can I use substr to achieve the same task? Thanks! (8 Replies)
Discussion started by: Xterra
8 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
MESSAGES(3)						  libbash messages Library Manual					       MESSAGES(3)

NAME
messages -- libbash library that implements a set of functions to print standard status messages SYNOPSIS
printOK [indent] printFAIL [indent] printNA [indent] printATTN [indent] printWAIT [indent] DESCRIPTION
General messages is a collection of functions to print standard status messages - those [ OK ] and [FAIL] messages you see during Linux boot process. The function list: printOK Prints a standard [ OK ] message (green) printFAIL Prints a standard [FAIL] message (red) printNA Prints a standard [ N/A] message (yellow) printATTN Prints a standard [ATTN] message (yellow) printWAIT Prints a standard [WAIT] message (yellow) Detailed interface description follows. indent Column to move to before printing. Default indent is calculated as TTY_WIDTH-10. If current tty width can not be determined (for example, in case of serial console), it defaults to 80, so default indent is 80-10=10 FUNCTIONS DESCRIPTIONS
printOK [indent] Prints a standard [ OK ] message (green) printFAIL [indent] Prints a standard [FAIL] message (red) printNA [indent] Prints a standard [ N/A] message (yellow) printATTN [indent] Prints a standard [ATTN] message (yellow) printWAIT [indent] Prints a standard [WAIT] message (yellow) EXAMPLES
Run a program named MyProg, and report it's success or failure: echo -n 'Running MyProg...' printWAIT if MyProg ; then printOK else printFAIL fi AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <gil@ran4.net> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
All times are GMT -4. The time now is 10:27 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy