Reference: what

UNIX in a Nutshell: System V Edition

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what

what [option] files

Search files for the pattern @(#) and print the text that follows it. (Typically, files are binary executables.) Actually, the pattern searched for is the value of %Z%, but the get command expands this keyword to @(#). The main purpose of what is to print identification strings.

Option

-s

Quit after finding the first occurrence of a pattern.

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Reference: valBook Index18.6 Alphabetical Summary of SCCS Commands
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