PATH Environment Variable

• Controls where commands are found
  • PATH is a list of directory pathnames separated by colons (:).
  • If a command does not begin with a slash, the shell tries finding the command in each directory in PATH. The first match is the command that is run.
  • Sample PATH ...
    • PATH=/bin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/home/jim/bin
  • Some people include "." in PATH.
    • It may be a security problem.

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