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The search path for finding binaries for commands. Common examples include /usr/bin and /usr/local/bin.

When a user or script attempts to run a command, the paths in $PATH are searched in order to find a matching file with execute permission.

The directories in $PATH are separated by a : character.

~> $ echo "$PATH"

So, for example, given the above $PATH, if you type lss at the prompt, the shell will look for /usr/kerberos/bin/lss, then /usr/local/bin/lss, then /bin/lss, then /usr/bin/lss, in this order, before concluding that there is no such command.

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