if statement in ksh - UNIX for Dummies Questions & Answers

gfhgfnhhn · #1 (**permalink**) 10-20-2006

what is the problem with this comparison in ksh script:

if [ "$1" -ne "[:digit:]" ]

it gives syntx error

Glenn Arndt · #2 (**permalink**) 10-20-2006

What are you trying to do? Determine if $1 is a digit? Can it be only one digit, or any integer?

gfhgfnhhn · #3 (**permalink**) 10-20-2006

i am trying to make sure that $1 is a number between 0-9

Glenn Arndt · #4 (**permalink**) 10-20-2006

Code:

if [[ $1 = [0-9] ]]; then
  print "yep"
fi

...or I suppose you could do this...

Code:

if [[ $1 = [[:digit:]] ]]; then
  print "yep"
fi

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
if statement	ramky79	Shell Programming and Scripting	6	05-29-2008 12:17 AM
IF Statement	koti_rama	Shell Programming and Scripting	3	04-29-2008 01:48 AM
If statement - How to write a null statement	april	Shell Programming and Scripting	3	04-16-2008 10:14 AM
using && in if statement ..	jisha	Shell Programming and Scripting	7	02-01-2008 03:52 AM
If statement	mariner	UNIX for Advanced & Expert Users	4	12-16-2004 03:21 AM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode