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labs:unix_intermediate [2008/09/24 19:45] adminlabs:unix_intermediate [2009/06/12 15:52] (current) admin
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 +====== Intermediate Unix Commands ======
  
 +===== Permissions =====
 +
 +UNIX organizes permissions by user, group, and others.  There are three different permissions available: read, write, and execute
 +
 +''chmod'' is the command to change permissions
 +
 +==== Groups ====
 +
 +To change the group associated with a file, use ''chgrp''
 +
 +
 +===== Finding Content: grep =====
 +
 +===== Finding Files: find =====
 +===== Finding Differences Between Files: diff =====
 +
 +===== Beginning of Files: head =====
 +
 +===== End of Files: tail =====
 +
 +===== Viewing Services Listening on a Port =====
 +
 +  lsof -i :<port>
 +
 +e.g., 
 +
 +  lsof -i :8080
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