Unix Tutorial

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Misc Commands: These commands list or alter information about the system: Command Chfn Chgrp Chown Date determin Du Echo Exit Finger groupadd Groups homequota Iostat Kill Last Logout Lun Netstat Passwd Passwd printenv Ps Ps quota -v Description Change your finger information Change the group ownership of a file Change owner Print the date Automatically find terminal type Print amount of disk usage Echo arguments to the standard options Quit the system Print information about logged-in users Create a user group Show group memberships Show quota and file usage Report I/O statistics Send a signal to a process Show last logins of users log off UNIX List user names or login ID Show network status Change user password Change your login password Display value of a shell variable Display the status of current processes Print process status statistics Display disk usage and limits TUTORIALS POINT Simply Easy Learning
Reset Reset terminal mode Script Keep script of terminal session Script Save the output of a command or process Setenv Set environment variables Sty Set terminal options Time Time a command Top Display all system processes Tset Set terminal mode Tty Print current terminal name Umask Show the permissions that are given to view files by default Uname Display name of the current system Uptime Get the system up time useradd Create a user account Users Print names of logged in users Vmstat Report virtual memory statistics W Show what logged in users are doing Who List logged in users TUTORIALS POINT Simply Easy Learning
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Unix Tutorial
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ABOUT THE TUTORIAL Unix Tutorial UN
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Renaming Directories: .............
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Extended Shell Scripts: ...........
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Example: ..........................
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Trapping Signals: .................
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The main concept that unites all ve
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New UNIX password:******* Retype ne
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CHAPTER 2 Unix File Management All
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Displays all the files whose name s
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4. Fourth Column: represents file n
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CHAPTER 3 Unix Directories Adirecto
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Creates the directories docs and pu
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CHAPTER 4 Unix File Permission Setu
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$ls -l testfile -rw-rwxrwx 1 amrood
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The SUID and SGID bits will appear
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Note - The shell initialization pro
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The default secondary prompt is > (
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CHAPTER 6 Java Basic Utilities So f
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laserp-574 grace 82744 Nov 7 11:28
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CHAPTER 7 Unix Pipes and Filters Yo
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This pipe sorts all files in your d
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The process runs in the foreground,
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$kill -9 6738 Terminated Parent and
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CHAPTER 9 Unix Communication When y
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prompt on Turns prompt on. Dir List
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No Plan. Check all the logged in us
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~ ~ ~ ~ ~ ~ ~ ~ "testfile" [New Fil
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Command CTRL+d CTRL+d CTRL+f CTRL+u
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^G U U J Press CNTRL and G keys at
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IMPORTANT: Here are the key points
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POSIX shell ( sh) The different C-t
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CHAPTER 12 Unix- Using Variables Av
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NAME="Zara Ali" unset NAME echo $NA
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Command-Line Arguments: The command
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CHAPTER 14 Unix - Using Arrays Ashe
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CHAPTER 15 Unix - Basic Operators T
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val=`expr $b / $a` echo "b / a : $v
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else echo "$a -ge $b: a is not grea
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!= Checks if the value of two opera
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] is true. -x file Check if file is
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Right shift == String comparison fo
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-r file Checks if file is readable
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Example: #!/bin/sh a=10 b=20 if [ $
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There is only one form of case...es
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CHAPTER 17 Unix - Shell Loops Loops
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done This will produce following re
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4) juice 5) appe 6) all 7) none #?
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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
Page 107 and 108: CHAPTER 21 Unix - IO Redirections M
Page 109 and 110: EOF 3 $ This is a simple lookup pro
Page 111 and 112: CHAPTER 22 Unix - Shell Functions F
Page 113 and 114: echo "Return value is $ret" This wo
Page 115 and 116: CHAPTER 23 Unix - Manpage Help All
Page 117 and 118: CHAPTER 24 Unix - Regular Expressio
Page 119 and 120: Try out the following address range
Page 121 and 122: sys:x:3:3:sys:/dev:/bin/sh sync:x:4
Page 123 and 124: [0-9] Matches a single number [a-zA
Page 125 and 126: (555)555-1213 (555)555-1214 (666)55
Page 127 and 128: dev /etc /lib /boot /home /mnt /pro
Page 129 and 130: $du -h /etc 5k /etc/cron.d 63k /etc
Page 131 and 132: CHAPTER 26 Unix - User Administrati
Page 133 and 134: $ groupdel developer This removes o
Page 135 and 136: CHAPTER 27 Unix - System Performanc
Page 137 and 138: CHAPTER 28 Unix - System Logging Un
Page 139 and 140: The combination of facilities and l
Page 141 and 142: Unix - Signals and Traps CHAPTER 29
Page 143 and 144: Trapping these signals is quite eas
Page 145 and 146: CHAPTER 30 Unix - Useful Commands T
Page 147 and 148: Ispell Emacs ex, edit Emacs Emacs C
Page 149: Command Dbx Gdb Make Nm Size Strip
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