Linux Basic Commands (Day-1)

 

1. File and Directory Management:

   • ls: List files and directories.
   • cd: Change directory.
   • pwd: Print the current working directory.
   • mkdir: Create a new directory.
   • rm: Remove files and directories.
   • cp: Copy files and directories.
   • mv: Move or rename files and directories.
   • cat: Display the contents of a file.
   • touch: Create an empty file.
   • find: Search for files and directories.

2. Text Processing:

   • grep: Search for specific text patterns in files.
   • sed: Stream editor for text manipulation.
   • awk: Pattern scanning and text processing tool.
   • cut: Extract sections from lines of files.
   • sort: Sort lines in a file.
   • uniq: Report or omit repeated lines in a file.

3. File Permissions:

   • chmod: Change the permissions of files and directories.
   • chown: Change the ownership of files and directories.
   • chgrp: Change the group ownership of files and directories.

4. Process Management:

   • ps: Report a snapshot of the current processes.
   • top: Monitor system processes and resource usage.
   • kill: Terminate processes by ID or name.
   • bg: Put a process in the background.
   • fg: Bring a background process to the foreground.

5. System Information:

   • uname: Print system information.
   • df: Report file system disk space usage.
   • du: Estimate file and directory space usage.
   • free: Display memory usage information.
   • uptime: Show how long the system has been running.

6. Compressed Files:

   • tar: Archive files together.
   • gzip: Compress files.
   • gunzip: Decompress files.
   • zip: Create ZIP archives.
   • unzip: Extract files from a ZIP archive.

7. Networking:

   • ping: Send ICMP echo requests to a network host.
   • ifconfig: Configure and display network interfaces.
   • ssh: Secure shell remote login.
   • wget: Download files from the web.
   • curl: Transfer data to or from a server.

8. Shell Scripting:

   • echo: Print a message.
   • read: Read input from the user.
   • for: Loop over a series of values.
   • while: Loop while a condition is true.
   • if: Conditionally execute commands.
   • case: Conditionally execute commands based on pattern matching.
   • function: Define and use functions.

 Each command has its own set of options and arguments, which can be explored further through their respective manual pages (man <command>).

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