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| W |
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| | w -- display information about currently logged-in users (  ) |
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| | w -- who is logged in, and what are they doing ( ) |
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| | wait -- shell built-in function to wait for other jobs or processes ( ) |
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| | wc -- display a count of lines, words and characters in a file ( ) |
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| | what -- extract SCCS version information from a file ( ) |
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| | whatis -- describe command ( ) |
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| | whence -- shell built-in functions to set/get attributes and values for shell variables and functions ( ) |
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| | whereis -- locate the binary, source and manual page files for a command ( ) |
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| | which -- locate a command; display its pathname or alias ( ) |
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| | who is logged in -- w ( ) |
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| | who -- who is on the system ( ) |
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| | whoami -- display effective user name ( ) |
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| | whocalls -- report on the calls to a specific procedure ( ) |
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| | whois -- Internet user name directory service ( ) |
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| | write -- write to another user ( ) |
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| | write file checksums and sizes -- cksum ( ) |
