unix+ command Explanation

unix+ command Explanation
Chapter I login and exit
Login: login:passwd:
Exit: Logout/exit/ctrl+d
Password change: passwd

Chapter II Directory Operations commands
Display directory: PWD
Build directory: mkdir directoy_name
Change Directory:
Upper level:..
Root directory: CD/
Delete directory: RmDir directory_name
Delete file: Rm-rf directory_name

Chapter III File Operation commands
List file Directories: Ls-la
Show file contents: Cat filename (ctrl+s key screen roll pause, press CTRL+Q to continue display)
Display file contents by screen: more filename (q key out of more state;/string to find out where string is located)
Pagination display of File contents: PG [option] filename ()
Read file: View filename ()
Show file header: Head [option] filename (-i)
Show file tail: tail [option] filename (-FN)
Display formatted file contents: PR filename
Copy files:
CP [option] filename1 filename2
CP [option] filename ... directory
Cp-r Directory1 Directon2
Delete file: RM-RF filename
Link file: ln [option] filename linkname
ln [option] Directory pathname
Change file Read permissions: chmod a+rx filename
Change file ownership: Chown username filename
Finding files: Find pathname [option] Expression
Match in search file: grep [option] pattern filenames
Compare Files: diff filename1 Filename2
Compare files: CMP [-l] [-s] filename1 filename2
Compare files Common: Comm [ -123] filename1 filename2
Sort files: sort [option] filename
ZIP file: Compress [option] filename
Unzip file: Compress [option] filename/zcat filename
Display file type: Files filename ...
File creation: tar [option] tarfile filename
Tape Copy file: dd [Option=value]
Modified file Date: Touch filename
Count files: WC [option] filename
Check spelling: spell [option] filename ...

Fourth chapter about state information commands
Show currently Registered users: w [option] [username]
Show who is logged on to the machine: WHO
Displays the user name on the current terminal: WhoAmI
Determine command location: Whereis commands
Find non-standard commands: which LS
Date displayed: Date
Show Calendar: Cal 2015
Calculate command execution time: [command]
Display user ids: ID [option] [user]
Display Host ID: HostID
Display host Name: hostname
Display process: Ps-ef grep|weblogic NETSTAT-LNTP
Display disk space: Df-h
Display file disk space: du [option] [filename]
Display disk space limit: quota-v [username]
Display terminal options: stty [option]
Display terminal name: TTY
Recall command: History
Online Help manual: Man command_name
Create alias: alias NewName name

Fifth Chapter Network Command
Show Network address: arp-a
Display user information: Finger username
Online Conversation: Talk username
Allow or deny accept information: MESG [n/y]
Write a message to another user: Write username [ttyname]
Test Network: Ping
Remote shell command: rsh hostsname command
Remote test Bay files: rcp [-r] File NewFile
Remote registration: rlogin hostname [-l username]
Telnet: telnet hostname
File Transfer: FTP hostname
Show path to network host: traceroute hostname

Sixth Mail Command

unix+ command Explanation