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Top Forums UNIX for Dummies Questions & Answers check length content existence of variable Post 302336238 by skinnygav on Tuesday 21st of July 2009 03:40:52 PM
Old 07-21-2009
check length content existence of variable

hi guys, im learning so be gentle...

i'm wanting to write a script to read in a customer number.

in order that the code is robust i want to check

1) the length of the value entered (4 characters)
2) that all characters entered are numeric between the values 1 to 3
3) that a value is entered

could anyone give me a few pointers to the commans/systax i will need to use for each check?

also any idea if any of them can be combined?

any pointers welcome...

thanks

skinnygav
 

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check-hostname(1M)					  System Administration Commands					check-hostname(1M)

NAME
check-hostname - check if sendmail can determine the system's fully-qualified host name SYNOPSIS
/usr/sbin/check-hostname DESCRIPTION
The check-hostname script is a migration aid for sendmail(1M). This script tries to determine the local host's fully-qualified host name (FQHN) in a manner similar to sendmail(1M). If check-hostname is able to determine the FQHN of the local host, it reports success. Other- wise, check-hostname reports how to reconfigure the system so that the FQHN can be properly determined. FILES
/etc/hosts Host name database /etc/nsswitch.conf Name service switch configuration file /etc/resolv.conf Configuration file for name server routines ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsndmu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
domainname(1M), sendmail(1M), hosts(4), attributes(5) SunOS 5.11 8 Mar 2006 check-hostname(1M)
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