Unix made easy
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This document provides summaries of common Linux commands for logging in and viewing system information, handling files and directories, managing processes, string manipulation, and connecting to servers. It describes commands like pwd, ls, head, tail, grep, kill, mkdir, rmdir, telnet and ftp along with their basic functions such as listing contents, editing files, searching files for strings, transferring files, and killing processes.
![Logged in = What to do
Who= who logged into the system The users and hosts
Pwd =print woring directory= lists the current working directory
Ls = lists all the directories files and sub directories –f –r and other options to remove the
unwanted expressions that also come in the result
Handling Files
Head [ -10] file1 = Shows the first 10 lines of the file
More file1= Shows more content of the file
Tail file1 = Shows the lasat few lines of the file
Ed file1 = Editor for the file to create/edit
Sed = Stream editor for editing the file
Vi = Editing the file and saving it
Mv file1 to file2 = Move the file into another
Cp file1 file2 = Write contents od file1 into file2
Awk file1 = Search for patterns in the file and process the results
Handling Directories
Chown = Change ownership of the
Chmod = Change file or directory access permissions
Mkdir = Creating new directory
Rmdir = Removing the directory
Handling Processes
Ps = show the active processes involved
Kill #pid = kill the process with specified pid
String Manipulation Commands](https://image.slidesharecdn.com/unixmadeeasy-140107170907-phpapp02/85/Unix-made-easy-1-320.jpg)
![Grep ‘search string’ file1 = Search for the occurance of the string in the file
Wc file1 = Find the number of words in the file
Server Connection Commands
telnet [host port ] =Used to communicate with other hosts present in the server.
ftp host = Transfer files using file transfer protocol](https://image.slidesharecdn.com/unixmadeeasy-140107170907-phpapp02/85/Unix-made-easy-2-320.jpg)
Unix made easy
- 1. Logged in = What to do Who= who logged into the system The users and hosts Pwd =print woring directory= lists the current working directory Ls = lists all the directories files and sub directories –f –r and other options to remove the unwanted expressions that also come in the result Handling Files Head [ -10] file1 = Shows the first 10 lines of the file More file1= Shows more content of the file Tail file1 = Shows the lasat few lines of the file Ed file1 = Editor for the file to create/edit Sed = Stream editor for editing the file Vi = Editing the file and saving it Mv file1 to file2 = Move the file into another Cp file1 file2 = Write contents od file1 into file2 Awk file1 = Search for patterns in the file and process the results Handling Directories Chown = Change ownership of the Chmod = Change file or directory access permissions Mkdir = Creating new directory Rmdir = Removing the directory Handling Processes Ps = show the active processes involved Kill #pid = kill the process with specified pid String Manipulation Commands
- 2. Grep ‘search string’ file1 = Search for the occurance of the string in the file Wc file1 = Find the number of words in the file Server Connection Commands telnet [host port ] =Used to communicate with other hosts present in the server. ftp host = Transfer files using file transfer protocol