Name the basic Linux commands.

Basic Linux commands ls - list files and directories. cd - change current directory. pwd - print current working directory. mkdir - create a directory. rmdir - remove an empty directory. rm - delete files or directories. cp - copy files or directories. mv - move or rename files/directories. cat - display file contents, concatenate files. less / more - page through files. head - display the first lines of a file. tail - display the last lines of a file. grep - search for lines matching a pattern. find - search for files and directories. chmod - change permissions. chown - change file owner. ps - view running processes. top - monitor system and process load. kill - terminate processes. ssh - remote connection. scp - secure copy over network. wget / curl - download files from the internet. man - view command manual. echo - display text. date - show or set date and time. df - view free disk space. du - view disk space usage. tar - archive and extract files. gzip / gunzip - compress and decompress files.

Primary usage of commands:

# List files
ls -l

# Change directory to Documents
cd Documents

# Create a new directory named NewFolder
mkdir NewFolder

# Copy file index.html to backup directory
cp index.html backup/

# Search for lines containing "error" in application.log
grep "error" application.log

# Display the first 10 lines of config.txt
head config.txt

# Set execute permissions on a script
chmod +x my_script.sh