Linux Beginner

What is Environment Path?

The PATH variable that tells the shell which directories to search when looking for executable commands.

The PATH environment variable contains a colon-separated list of directories. When you type a command, the shell searches these directories in order. For example, PATH=/usr/local/bin:/usr/bin:/bin means these three directories are searched.

Adding directories to PATH (export PATH=$PATH:/new/dir) makes programs in those directories available as commands. Misconfigured PATH is a common cause of "command not found" errors.

Related Terms

A mechanism that changes the apparent root directory for a process and its children, creating an isolated filesystem view.

A command-line tool for querying and viewing logs collected by systemd's journal logging system.

A powerful text processing language for extracting and manipulating structured data from files or command output.

A dynamic firewall management tool for Linux that provides a D-Bus interface for managing firewall rules with zones.

File Permissions

A security mechanism that controls who can read, write, or execute files and directories in Unix-like systems.

A Linux kernel feature that limits, accounts for, and isolates resource usage of process groups.

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