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Address Substitution: ............................................................................. 119<br />
The Matching Command: ....................................................................... 120<br />
Using Regular Expression: ..................................................................... 120<br />
Matching Characters: ............................................................................. 121<br />
Character Class Keywords: .................................................................... 122<br />
Aampersand Referencing: ...................................................................... 122<br />
Using Multiple sed Commands: .............................................................. 123<br />
Back References: ................................................................................... 123<br />
<strong>Unix</strong> – File System Basics .................................................... 125<br />
Directory Structure: ................................................................................ 125<br />
Navigating the File System: .................................................................... 126<br />
The df Command: .................................................................................. 127<br />
The du Command: ................................................................................. 127<br />
Mounting the File System: ...................................................................... 128<br />
Unmounting the File System: ................................................................. 128<br />
User and Group Quotas: ........................................................................ 128<br />
<strong>Unix</strong> – User Administration ................................................... 130<br />
Managing Users and Groups: ................................................................ 130<br />
Create a Group ...................................................................................... 131<br />
Modify a Group: ...................................................................................... 131<br />
Delete a Group: ...................................................................................... 131<br />
Create an Account ................................................................................. 132<br />
Modify an Account: ................................................................................. 132<br />
Delete an Account: ................................................................................. 133<br />
<strong>Unix</strong> – System Performance ................................................ 134<br />
Peformance Components: ...................................................................... 134<br />
Peformance Tools: ................................................................................. 135<br />
<strong>Unix</strong> – System Logging ........................................................ 136<br />
Syslog Facilities: .................................................................................... 136<br />
Syslog Priorities: .................................................................................... 137<br />
The /etc/syslog.conf file: ......................................................................... 138<br />
Logging Actions: ..................................................................................... 138<br />
The logger Command:............................................................................ 139<br />
Log Rotation: .......................................................................................... 139<br />
Important Log Locations ......................................................................... 139<br />
<strong>Unix</strong> – Signals and Traps ..................................................... 140<br />
List of Signals: ........................................................................................ 140<br />
Default Actions: ...................................................................................... 141<br />
Sending Signals: .................................................................................... 141<br />
TUTORIALS POINT<br />
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