Unix Tutorial

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There are following two important points to be noted: The vi is case-sensitive, so you need to pay special attention to capitalization when using commands. Most commands in vi can be prefaced by the number of times you want the action to occur. For example, 2j moves cursor two lines down the cursor location. There are many other ways to move within a file in vi. Remember that you must be in command mode (press Esc twice). Here are some more commands you can use to move around the file: Command Description 0 or | Positions cursor at beginning of line. $ Positions cursor at end of line. w b Positions cursor to the next word. Positions cursor to previous word. ( Positions cursor to beginning of current sentence. ) Positions cursor to beginning of next sentence. E Move to the end of Blank delimited word { Move a paragraph back } Move a paragraph forward [[ Move a section back ]] Move a section forward n| Moves to the column n in the current line 1G G nG Move to the first line of the file Move to the last line of the file Move to nth line of the file :n Move to nth line of the file fc Fc H nH M L nL Move forward to c Move back to c Move to top of screen Moves to nth line from the top of the screen Move to middle of screen Move to botton of screen Moves to nth line from the bottom of the screen :x Control Commands: TUTORIALS POINT Simply Easy Learning Colon followed by a number would position the cursor on line number represented by x There are following useful command which you can use along with Control Key:
Command CTRL+d CTRL+d CTRL+f CTRL+u CTRL+b CTRL+e CTRL+y CTRL+u CTRL+d CTRL+b CTRL+f Description Move forward 1/2 screen Move forward 1/2 screen Move forward one full screen Move backward 1/2 screen Move backward one full screen Moves screen up one line Moves screen down one line Moves screen up 1/2 page Moves screen down 1/2 page Moves screen up one page Moves screen down one page CTRL+I Editing Files: Redraws screen To edit the file, you need to be in the insert mode. There are many ways to enter insert mode from the command mode: Command i I a A o Description Inserts text before current cursor location. Inserts text at beginning of current line. Inserts text after current cursor location. Inserts text at end of current line. Creates a new line for text entry below cursor location. O Creates a new line for text entry above cursor location. Deleting Characters: Here is the list of important commands which can be used to delete characters and lines in an opened file: Command x X dw d^ Description Deletes the character under the cursor location. Deletes the character before the cursor location. Deletes from the current cursor location to the next word. Deletes from current cursor position to the beginning of the line. d$ Deletes from current cursor position to the end of the line. D Deletes from the cursor position to the end of the current line. TUTORIALS POINT Simply Easy Learning
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Unix Tutorial
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ABOUT THE TUTORIAL Unix Tutorial UN
Page 5 and 6: Renaming Directories: .............
Page 7 and 8: Extended Shell Scripts: ...........
Page 9 and 10: Example: ..........................
Page 11 and 12: Trapping Signals: .................
Page 13 and 14: The main concept that unites all ve
Page 15 and 16: New UNIX password:******* Retype ne
Page 17 and 18: CHAPTER 2 Unix File Management All
Page 19 and 20: Displays all the files whose name s
Page 21 and 22: 4. Fourth Column: represents file n
Page 23 and 24: CHAPTER 3 Unix Directories Adirecto
Page 25 and 26: Creates the directories docs and pu
Page 27 and 28: CHAPTER 4 Unix File Permission Setu
Page 29 and 30: $ls -l testfile -rw-rwxrwx 1 amrood
Page 31 and 32: The SUID and SGID bits will appear
Page 33 and 34: Note - The shell initialization pro
Page 35 and 36: The default secondary prompt is > (
Page 37 and 38: CHAPTER 6 Java Basic Utilities So f
Page 39 and 40: laserp-574 grace 82744 Nov 7 11:28
Page 41 and 42: CHAPTER 7 Unix Pipes and Filters Yo
Page 43 and 44: This pipe sorts all files in your d
Page 45 and 46: The process runs in the foreground,
Page 47 and 48: $kill -9 6738 Terminated Parent and
Page 49 and 50: CHAPTER 9 Unix Communication When y
Page 51 and 52: prompt on Turns prompt on. Dir List
Page 53 and 54: No Plan. Check all the logged in us
Page 55: ~ ~ ~ ~ ~ ~ ~ ~ "testfile" [New Fil
Page 59 and 60: ^G U U J Press CNTRL and G keys at
Page 61 and 62: IMPORTANT: Here are the key points
Page 63 and 64: POSIX shell ( sh) The different C-t
Page 65 and 66: CHAPTER 12 Unix- Using Variables Av
Page 67 and 68: NAME="Zara Ali" unset NAME echo $NA
Page 69 and 70: Command-Line Arguments: The command
Page 71 and 72: CHAPTER 14 Unix - Using Arrays Ashe
Page 73 and 74: CHAPTER 15 Unix - Basic Operators T
Page 75 and 76: val=`expr $b / $a` echo "b / a : $v
Page 77 and 78: else echo "$a -ge $b: a is not grea
Page 79 and 80: != Checks if the value of two opera
Page 81 and 82: ] is true. -x file Check if file is
Page 83 and 84: Right shift == String comparison fo
Page 85 and 86: -r file Checks if file is readable
Page 87 and 88: Example: #!/bin/sh a=10 b=20 if [ $
Page 89 and 90: There is only one form of case...es
Page 91 and 92: CHAPTER 17 Unix - Shell Loops Loops
Page 93 and 94: done This will produce following re
Page 95 and 96: 4) juice 5) appe 6) all 7) none #?
Page 97 and 98: CHAPTER 18 Unix - Loop Control So f
Page 99 and 100: 1 0 1 5 The continue statement: The
Page 101 and 102: \n new line \r carriage return \t h
Page 103 and 104: CHAPTER 20 Unix - Quoting Mechanism
Page 105 and 106: The Double Quotes: Try to execute t
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CHAPTER 21 Unix - IO Redirections M
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EOF 3 $ This is a simple lookup pro
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CHAPTER 22 Unix - Shell Functions F
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echo "Return value is $ret" This wo
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CHAPTER 23 Unix - Manpage Help All
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CHAPTER 24 Unix - Regular Expressio
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Try out the following address range
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sys:x:3:3:sys:/dev:/bin/sh sync:x:4
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[0-9] Matches a single number [a-zA
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(555)555-1213 (555)555-1214 (666)55
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dev /etc /lib /boot /home /mnt /pro
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$du -h /etc 5k /etc/cron.d 63k /etc
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CHAPTER 26 Unix - User Administrati
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$ groupdel developer This removes o
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CHAPTER 27 Unix - System Performanc
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CHAPTER 28 Unix - System Logging Un
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The combination of facilities and l
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Unix - Signals and Traps CHAPTER 29
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Trapping these signals is quite eas
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CHAPTER 30 Unix - Useful Commands T
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Ispell Emacs ex, edit Emacs Emacs C
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Command Dbx Gdb Make Nm Size Strip
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Reset Reset terminal mode Script Ke
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