<** Linux Most Important Basic Commands **>

/*  This are some quick command which are useful for beginners and as well as experts in Linux  */

• alias     ~/~    'USE'-> Create an alias.
• awk     ~/~    'USE'-> Find and Replace text, database sort/validate/index.
• break  ~/~    'USE'-> Exit from a loop.
• builtin  ~/~    'USE'-> Run a shell builtin.
• cal      ~/~    'USE'-> Display a calendar.
• case    ~/~   'USE'-> Conditionally perform a command.
• cat      ~/~    'USE'-> Display the contents of a file.
• cd       ~/~    'USE'-> Change Directory.
• cfdisk  ~/~   'USE'-> Partition table manipulator for Linux.
• chgrp  ~/~   'USE'-> Change group ownership.
• chmod   ~/~ 'USE'-> Change access permissions.
• chown   ~/~ 'USE'-> Change file owner and group.
• chroot  ~/~  'USE'-> Run a command with a different root directory.
• cksum  ~/~  'USE'-> Print CRC checksum and byte counts.
• clear    ~/~    'USE'-> Clear terminal screen.
• cmp     ~/~   'USE'-> Compare two files.
• comm    ~/~ 'USE'-> Compare two sorted files line by line.
• command ~/~'USE'-> Run a command - ignoring shell functions.
• continue ~/~ 'USE'-> Resume the next iteration of a loop.
• cp         ~/~  'USE'-> Copy one or more files to another location.
• cron    ~/~    'USE'-> Daemon to execute scheduled commands.
• crontab ~/~  'USE'-> Schedule a command to run at a later time.
• csplit  ~/~     'USE'-> Split a file into context-determined pieces.
• cut     ~/~     'USE'-> Divide a file into several parts.
• date    ~/~    'USE'-> Display or change the date & time.
• dc      ~/~    'USE'-> Desk Calculator.
• dd      ~/~    'USE'-> Data Dump - Convert and copy a file.
• declare ~/~  'USE'-> Declare variables and give them attributes.
• df      ~/~     'USE'-> Display free disk space.
• diff    ~/~     'USE'-> Display the differences between two files.
• diff3   ~/~    'USE'-> Show differences among three files.
• dir     ~/~     'USE'-> Briefly list directory contents.
• dircolors~/~ 'USE'-> Colour setup for `ls.
• dirname ~/~ 'USE'-> Convert a full pathname to just a path.
• dirs    ~/~    'USE'-> Display list of remembered directories.
• du      ~/~    'USE'-> Estimate file space usage.
• echo    ~/~  'USE'-> Display message on screen.
• ed      ~/~   'USE'-> A line-oriented text editor (edlin).
• egrep   ~/~ 'USE'-> Search file(s) for lines that match an extended expression.
• eject   ~/~  'USE'-> Eject CD-ROM.
• enable  ~/~ 'USE'-> Enable and disable builtin shell commands.
• env     ~/~  'USE'-> Display, set, or remove environment variables.
• eval    ~/~  'USE'-> Evaluate several commands/arguments.
• exec    ~/~ 'USE'-> Execute a command.
• exit    ~/~  'USE'-> Exit the shell.
• expand  ~/~'USE'-> Convert tabs to spaces.
• export  ~/~ 'USE'-> Set an environment variable.
• expr    ~/~  'USE'-> Evaluate expressions.
• factor  ~/~  'USE'-> Print prime factors.
• false   ~/~   'USE'-> Do nothing, unsuccessfully.
• fdformat~/~'USE'-> Low-level format a floppy disk.
• fdisk   ~/~  'USE'-> Partition table manipulator for Linux.
• fgrep   ~/~ 'USE'-> Search file(s) for lines that match a fixed string.
• find    ~/~  'USE'-> Search for files that meet a desired criteria.
• fmt     ~/~  'USE'-> Reformat paragraph text.
• fold    ~/~  'USE'-> Wrap text to fit a specified width,
• for     ~/~  'USE'-> Expand words, and execute commands.
• format  ~/~'USE'-> Format disks or tapes.
• free    ~/~  'USE'-> Display memory usage.
• fsck    ~/~  'USE'-> File system consistency check and repair,
• function ~/~'USE'-> Define Function Macros.
• gawk    ~/~ 'USE'-> Find and Replace text within file(s).
• getopts ~/~ 'USE'-> Parse positional parameters.
• grep    ~/~  'USE'-> Search file(s) for lines that match a given pattern.
• groups  ~/~ 'USE'-> Print group names a user is in.
• gzip    ~/~   'USE'-> Compress or decompress named file(s).
• hash    ~/~  'USE'-> Remember the full path name of a name argument,
• head    ~/~  'USE'-> Output the first part of file(s),
• history ~/~  'USE'-> Command History.
• hostname ~/~'USE'-> Print or set system name.
• id      ~/~   'USE'-> Print user and group id's.
• if      ~/~    'USE'-> Conditionally perform a command.
• import  ~/~'USE'-> Capture an X server screen and save the image to file.
• info    ~/~  'USE'-> Help info.
• install ~/~  'USE'-> Copy files and set attributes.
• join    ~/~  'USE'-> Join lines on a common field.
• kill    ~/~   'USE'-> Stop a process from running.
• less    ~/~  'USE'-> Display output one screen at a time.
• let     ~/~   'USE'-> Perform arithmetic on shell variables.
• ln      ~/~   'USE'-> Make links between files.
• local   ~/~ 'USE'-> Create variables.
• locate  ~/~'USE'-> Find files.
• logname ~/~'USE'-> Print current login name.
• logout  ~/~ 'USE'-> Exit a login shell.
• lpc     ~/~  'USE'-> Line printer control program.
• lpr     ~/~  'USE'-> Off line print.
• lprint  ~/~  'USE'-> Print a file.
• lprintd ~/~ 'USE'-> Abort a print job.
• lprintq ~/~ 'USE'-> List the print queue.
• lprm    ~/~ 'USE'-> Remove jobs from the print queue.
• ls      ~/~   'USE'-> List information about file(s).
• m4      ~/~ 'USE'-> Macro processor.
• man     ~/~ 'USE'-> Help manual.
• mkdir   ~/~ 'USE'-> Create new folder(s).
• mkfifo  ~/~ 'USE'-> Make FIFOs (named pipes).
• mknod ~/~ 'USE'-> Make block or character special files.
• more    ~/~ 'USE'-> Display output one screen at a time.
• mount   ~/~'USE'-> Mount a file system.
• mtools  ~/~'USE'-> Move or rename files or directories.
• nice     ~/~ 'USE'-> Set the priority of a command or job.
• nl        ~/~  'USE'-> Number lines and write files.
• nohup  ~/~'USE'-> Run a command immune to hangups.
• passwd ~/~'USE'-> Modify a user password.
• paste   ~/~ 'USE'-> Merge lines of files.
• pathchk ~/~'USE'-> Check file name portability.
• popd    ~/~ 'USE'-> Restore the previous value of the current directory.
• pr      ~/~   'USE'-> Convert text files for printing.
• printcap~/~'USE'-> Printer capability database.
• printenv~/~'USE'-> Print environment variables.
• printf  ~/~  'USE'-> Format and print data,
• ps      ~/~  'USE'-> Process status.
• pushd   ~/~'USE'-> Save and then change the current directory,
• pwd     ~/~'USE'-> Print Working Directory,
• quota   ~/~'USE'-> Display disk usage and limits.
• quotacheck~/~ 'USE'->Scan a file system for disk usage.
• quotactl~/~'USE'-> Set disk quotas.
• ram     ~/~ 'USE'-> ram disk device.
• rcp     ~/~  'USE'-> Copy files between two machines,
• read    ~/~  'USE'-> read a line from standard input,
• readonly~/~'USE'-> Mark variables/functions as readonly.
• remsync ~/~'USE'-> Synchronize remote files via email,
• return  ~/~  'USE'-> Exit a shell function.
• rm      ~/~  'USE'-> Remove files,
• rmdir   ~/~ 'USE'-> Remove folder(s).
• rpm     ~/~ 'USE'-> Remote Package Manager.
• rsync   ~/~ 'USE'-> Remote file copy (Synchronize file trees).
• screen  ~/~'USE'-> Terminal window manager.
• sdiff   ~/~  'USE'-> Merge two files interactively.
• sed     ~/~ 'USE'-> Stream Editor.
• select  ~/~ 'USE'-> Accept keyboard input.
• seq     ~/~ 'USE'-> Print numeric sequences.
• set     ~/~  'USE'-> Manipulate shell variables and functions.
• shift   ~/~  'USE'-> Shift positional parameters,
• shopt   ~/~'USE'-> Shell Options,
• shutdown~/~'USE'-> Shutdown or restart linux.
• sleep   ~/~ 'USE'-> Delay for a specified time,
• sort    ~/~ 'USE'-> Sort text files.
• source  ~/~'USE'-> Run commands from a file `.'
• split   ~/~  'USE'-> Split a file into fixed-size pieces,
• su      ~/~  'USE'-> Substitute user identity,
• sum     ~/~'USE'-> Print a checksum for a file,
• symlink ~/~'USE'-> Make a new name for a file.
• sync    ~/~ 'USE'-> Synchronize data on disk with memory,
• tac     ~/~  'USE'-> Concatenate & write files in Reverse.
• tail    ~/~   'USE'-> Output the last part of files,
• tar     ~/~  'USE'-> Tape ARchiver.
• tee     ~/~  'USE'-> Redirect output to multiple files,
• test    ~/~  'USE'-> Evaluate a, Conditional expression.
• time    ~/~ 'USE'-> Measure Program Resource Use,
• times   ~/~'USE'-> User and system times.
• touch   ~/~'USE'-> Change file timestamps,
• top     ~/~ 'USE'-> List processes running on the system/
•                     /trace route Trace Route to Host,
• trap     ~/~'USE'-> Run a command when a signal is set (bourne),
• tr       ~/~ 'USE'-> Translate, Squeeze, and/or delete characters.
• true     ~/~'USE'-> Do nothing,. successfully,
• tsort    ~/~'USE'-> Topological sort,
• tty      ~/~ 'USE'-> Print file name of terminal on Stdin.
• type     ~/~'USE'-> Describe a commands,
• ulimit  ~/~ 'USE'-> Limit user resources.
• umask~/~ 'USE'-> Users file Creation mask,
• umount ~/~'USE'-> Unmount a device.
• unalias  ~/~'USE'-> Remove an alias,
• uname  ~/~'USE'-> Print system information.
• unexpand~/~'USE'-> Convert spaces to tabs,
• uniq     ~/~   'USE'-> Uniquify files.
• units    ~/~   'USE'-> Convert units from one scale to another,
• unset    ~/~  'USE'-> Remove variable or function names.
• unshar   ~/~ 'USE'-> Unpack shell archive scripts,
• until    ~/~   'USE'-> Execute commands (Until Error).
• useradd  ~/~'USE'-> Create new user accounts,
• usermod  ~/~'USE'-> Modify user accounts.
• users    ~/~  'USE'-> List users Currently logged in,
• uuencode ~/~'USE'-> Encode a binary files .
• uudecode ~/~'USE'-> Decode a file created by uuencode,
• v        ~/~     'USE'-> Verbosely list directory contents. (`ls -l -b'),
• vdir     ~/~    'USE'-> Verbosely list directory contents. (`ls -l -b'),
• vi       ~/~     'USE'-> Text Editor.
• watch    ~/~ 'USE'-> Execute/display a program periodically.
• wc       ~/~  'USE'-> Print byte, word, and line counts,
• whereis  ~/~'USE'-> Report all known instances of a command.,
• which    ~/~ 'USE'-> Locate a program file in the user's path,
• while    ~/~ 'USE'-> Execute commands.
• who      ~/~'USE'-> Print all usernames currently logged in.
• whoami ~/~'USE'-> Print the current user id and name (`id -un').
• xargs    ~/~'USE'-> Execute utility, passing constructed argument list(s).
• yes      ~/~ 'USE'-> Print a string until interrupted.
• .period  ~/~'USE'-> Run commands from a file,
•   ###    ~/~'USE'-> Comment / Remark.

/* This are all LINUX command with all use */