: # HP-UX (Web host server) specific commands here elif isOS
: # HP-UX specific commands here elif isOS solaris ; then : # Solaris specific comands here else : # generic unix commands here fi The reason that you do not directly check the value of $1 but instead use the variable REQ, is that this enables a greater flexibility on the part of the function’s user. For example, you can use either of the following to check whether a system is Linux: isOS LINUX isOS linux Sams Teach Yourself Shell Programming in 24 Hours Contents Index Hour 23: Scripting for Portability Previous Chapter Next Chapter Sections in this Chapter: Determining UNIX Versions Questions Techniques for Increasing Portability Terms Summary Previous Section Next Section Copyright Macmillan Computer Publishing. All rights reserved.
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