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Linux Commands Reference

Comprehensive Linux command reference manual with detailed usage, parameter descriptions, and practical examples. Features search functionality for quick lookup.

File
13
ls
List directory contents
Usage:
ls [options] [file or directory]
Examples:
Options:
listdirectoryfileshowview
cd
Change directory
Usage:
cd [directory]
Examples:
changedirectorynavigateenter
pwd
Print working directory
Usage:
pwd [options]
Examples:
Options:
currentdirectorypathshow
cp
Copy files or directories
Usage:
cp [options] source target
Examples:
Options:
copyfiledirectorybackup
mv
Move or rename files
Usage:
mv [options] source target
Examples:
Options:
moverenamefiledirectory
rm
Remove files or directories
Usage:
rm [options] file or directory
Examples:
Options:
removedeletefiledirectory
mkdir
Create directories
Usage:
mkdir [options] directory_name
Examples:
Options:
createdirectoryfoldernew
touch
Create empty files or update file timestamps
Usage:
touch [options] file
Examples:
Options:
createfiletimestampupdate
cat
Concatenate and display file contents
Usage:
cat [options] [file]
Examples:
Options:
displayfile contentconcatenateview
less
Display file contents page by page
Usage:
less [options] [file]
Examples:
Options:
pageviewfilebrowse
head
Display the beginning of a file
Usage:
head [options] [file]
Examples:
Options:
beginningfirst linesshowfile
tail
Display the end of a file
Usage:
tail [options] [file]
Examples:
Options:
endlast linesmonitorlog
grep
Search for text patterns
Usage:
grep [options] pattern [file]
Examples:
Options:
searchtextpatternfind
System
4
ps
Show process status
Usage:
ps [options]
Examples:
Options:
processstatussystemmonitor
top
Display system processes in real-time
Usage:
top [options]
Examples:
Options:
real-timeprocesssystemmonitor
df
Show disk space usage
Usage:
df [options] [file or directory]
Examples:
Options:
diskspaceusagestorage
free
Show memory usage
Usage:
free [options]
Examples:
Options:
memoryusagesystemmonitor
Network
3
ping
Test network connectivity
Usage:
ping [options] host
Examples:
Options:
networkconnectivitytestping
curl
Transfer data from command line
Usage:
curl [options] [URL]
Examples:
Options:
HTTPtransferdownloadAPI
wget
Download files from the web
Usage:
wget [options] [URL]
Examples:
Options:
downloadfilewebresume
Permission
3
chmod
Change file permissions
Usage:
chmod [options] mode file
Examples:
Options:
permissionchangefileexecute
chown
Change file owner and group
Usage:
chown [options] user:group file
Examples:
Options:
ownergroupchangefile
sudo
Execute commands with superuser privileges
Usage:
sudo [options] command
Examples:
Options:
superuserprivilegeexecuteadmin
Package
2
apt
Debian/Ubuntu package manager
Usage:
apt [command] [options] [package]
Examples:
Options:
package managementinstallupdateremove
yum
Red Hat/CentOS package manager
Usage:
yum [command] [options] [package]
Examples:
Options:
package managementinstallupdateremove
Compression
3
tar
Create and extract archives
Usage:
tar [options] [files or directories]
Examples:
Options:
archivecompressbackupextract
gzip
Compress files
Usage:
gzip [options] [file]
Examples:
Options:
compressgzipfiledecompress
zip
Create ZIP archives
Usage:
zip [options] archive_name [files or directories]
Examples:
Options:
ZIPcompressfilearchive
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