Table of Contents
unix Keyword 2
PATH environment variable
Definition
The $PATH variable specifies a list of one or more directory names separated by colons.
The /bin, /usr, and /local directories are typically included in most users' $PATH settings. The current directory is sometimes included, allowing programs in the current directory to be executed. Superuser (root) accounts as a rule are not include in $PATH, however, in order to prevent the accidental execution of scripts in the current directory.
When a command name is specified by the user or an exec call is made from a program, the system searches through $PATH, examining each directory from left to right in the list, looking for a filename that matches the command name. Once found, the program is executed as a child process of the command shell or program that issued the command.
References
unix Keyword 2 Phase 2
quotes
Definition
A helpful tool that allows you to print characters just as you input them
References
List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).
- Reference 1
- Reference 2
- Reference 3
Demonstration
lab46:~$ dir -l | grep "d" | wc -l 19 lab46:~$