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UNIX in a Nutshell: System V Edition

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UNIX Commands
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which

/usr/ucb/which [commands]

List which files would be executed if the named commands had been run as a command. which reads the user's .cshrc file, checking aliases and searching the path variable. Users of the Bourne or Korn shells can use the built-in type command as an alternative.

Example

which cc ls
/usr/ucb/cc
ls:      aliased to ls -sFC


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