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Top Forums UNIX for Dummies Questions & Answers while loop not taking the not equal to condition Post 302223259 by bakunin on Friday 8th of August 2008 08:06:44 PM
Old 08-08-2008
To be honest i think you should change your programs logic completely: You enter a character (or word), some values are legal, ALL others are not. You do not need the functionality of a while-loop at all, so why should you use it?

How about the following, which is easily extensible:

Code:
print - "enter a value: " ; read value
case value in
     [Ss])
          print - "You entered an s or an S."
          ;;

     [Nn])
          print - "You entered an n or an N."
          ;;

     *)
          print - "You entered an illegal value"
          ;;
esac

This should also be easier to read and to maintain.

If you want to use the code part as a device to process the commandline you could also resort to the getopts-program. Have a look at the manpage for it and if this fits your requirements and you still have problems applying it come back and ask again.

I hope this helps.

bakunin
 

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print-service(1M)					  System Administration Commands					 print-service(1M)

NAME
print-service - select, report, import, export active print service on a system SYNOPSIS
print-service [-s service [-m] | -q | -e file | -i file] DESCRIPTION
The print-service utility manages print service selection, as well as export and import of basic print queue configuration. Only a user root privileges or with the Printer Management profile can change the active print service or import print queue configuration. OPTIONS
The following options are supported: -s service Select the active print service for on a host. service can be one of lp or cups. -m Migrate print queue configuration during print service selection. -q Report the active print service on a host. -e file Export basic print queue configuration to a file. -i file Import basic print queue configuration from a file. EXAMPLES
Example 1 Selecting a Print Service The following command selects the CUPS print service as the active print service on a host. # print-service -s cups Example 2 Reporting the Active Print Service The following command reports the active print service on a host. # print-service -q Example 3 Exporting a Print Queue Configuration The following command exports the print queue configuration from the active print service. # print-service -e /tmp/queues Example 4 Importing a Print Queue Configuration The following command imports the print queue configuration to the active print service. # print-service -i /tmp/queues EXIT STATUS
0 Successful completion. non-zero An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWpcu | +-----------------------------+-----------------------------+ |Interface Stability |Obsolete | +-----------------------------+-----------------------------+ SEE ALSO
intro(1), attributes(5) NOTES
The print queue configuration saved and restored during export, import, and migration is limited to queue name and device name. It is likely that further configuration changes will be required before imported or migrated print queues become usable. SunOS 5.11 18 Mar 2008 print-service(1M)
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