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Shell Programming for System Administrators |
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The Shell Programming for System Administrators course provides students with the skills to read, write, and debug UNIX shell scripts. The course begins by describing simple scripts to automate frequently executed commands and continues by describing conditional logic, user interaction, loops, menus, traps, and functions. This course is intended for system administrators who have mastered the basics of a UNIX Operating Environment (OE) such as the Solaris OE or Linux and who would like to read and understand the various boot scripts and write their own scripts to automate their day-to-day tasks. This course explores, in detail, the Bourne and Korn shell scripting languages.
Students who can benefit from this course include:
- System Administrators
- System Programmers
- UNIX Operators
- Database Administrators
- Web administrators
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Use flow control constructs, such as branching and loopingCustomize system-wide shell initialization filesUse local and environmental variables and shell metacharacters in scriptsUse the exit status of a command to determine if the command succeeded or failedDevelop interactive scriptsWrite a script that uses functionsWrite a script that uses a trap to catch a signalAccess and process command-line arguments passed into a script
| | Write sed scripts to perform noninteractive editing tasksWrite nawk scripts to manipulate individual fields within a recordWrite nawk scripts to write reports based upon an input filePerform string manipulation and integer arithmetic on shell variablesWrite real world administration and reporting scriptsUse regular expressions with the grep, sed, and nawkManipulate text files with grep, sed, and nawk
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| Prerequisites |
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Use basic UNIX commands, such as rm, cp, man, more, mkdir, ps, and chmod
| | Create and edit text files in vi or a text editor
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 | This course is taught by Certified Oracle instructors.
ExitCertified is the only Authorized Sun Education Partner in Canada, and the largest Sun reseller in North America.
There is a difference....learn more.  |
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| Code: |
SA-245 |
| Format: |
Instructor-Led Classroom |
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| Length: |
5 Days |
| Certified By: |
Oracle |
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| Tuition (CAD): $4,125 |
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| | | | | | Live Virtual Class | | Jul.8 - Jul.12 |  | | Live Virtual Class | | Jul.21 - Jul.25 | | | Live Virtual Class | | Jul.29 - Aug.2 | | | Live Virtual Class | | Aug.12 - Aug.16 | | | Live Virtual Class | | Sep.16 - Sep.20 | | | Live Virtual Class | | Nov.4 - Nov.8 | | | Live Virtual Class | | Nov.18 - Nov.22 | | | 7 Dates Offered |
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Shell Programming for System Administrators Content Details |
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| UNIX Shells and Shell Scripts
| - Describe the role of shells in the UNIX environment
- Describe the standard shells
- Define the components of a shell script
- Write a simple shell script
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| Writing and Debugging Scripts
| - Start a script with #!
- Put comments in a script
- Change permissions on a script
- Execute a script
- Debug a script
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- Use Bourne and Korn shell variables
- Assign values to shell variables
- Unset shell and environment variables
- Customize the user environment using the .profile file
- Perform arithmetic operations
- Create and use aliases
- Customize the Bourne and Korn shell environments
- Use the tilde expansion and command substitution features of the Korn shell
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| Regular Expressions and the grep Command
| - Use and describe regular expressions
- Describe the grep command
- Use the grep command to find patterns in a file
- Use the regular expression characters with the grep command
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- Use the sed editor to perform noninteractive editing tasks
- Use regular expression characters with the sed command
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| The nawk Programming Language
| - Use nawk commands from the command line
- Write simple nawk programs to generate data reports from text files
- Write simple nawk programs to generate numeric and text reports from text files
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- Use the exit status of a command as conditional control
- Use the "if" statement to test a condition
- Pass values using command-line arguments (positional parameters) into a script
- Create USAGE messages
- Use conditional if, then, elif, else, and fi constructs
- Use exit, let, and test statements ([[ ]], " ")
- Apply the , ||, and ! Boolean logic operators
- Use the case statement
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- Use the print and echo commands to display text
- Use the read command to interactively assign data to a shell variable
- Read user input into one or more variables, using one read statement
- Use special characters, with print and echo, to make the displayed text more user friendly
- Create a "here" document
- Use file descriptors to read from and write to multiple files
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- Write scripts that use for, while, and until loops
- Write a script using the select statement
- Describe when to use loops within a script
- Generate argument lists using command, variable, and file-name substitution
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- Process script options using the getopts statement
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| Advanced Variables, Parameters, and Argument Lists
| - Declare strings, integers, and array variables
- Manipulate string variables
- Change the values of the positional parameters using the set statement within a script
- Use Korn shell arrays
- Set default values for parameters
- Use the Korn shell built-in let, print, set, and typeset statements
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- Create user-defined functions in a shell script
- Create, invoke, and display functions from the command line
- Pass arguments into a function
- Call functions from special (function) files that are saved in one or more function directories
- Describe where functions are available for use
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