Reference no: EM13963414
UNIX systems programming Writing Perl Scripts
Convert a UNIX shell script (User Maintenance) into a Perl script. This Perl script must perform the following tasks:
Generate a menu to ask the system administrator for the task that he or she would like to see performed.
The available tasks are as follows:
Create a UNIX group.
Drop a UNIX group.
Create a user.
Drop a user.
Prompt the user for the choice, and perform the system command.
In addition, check to make sure that before creating either the user or the group that neither already exists; if it does already exist, print out the existing user ID, comment field, and home directory locations from the password file.
Include a discussion about what regular expressions are and how Perl efficiently includes regular expression processing in the language. Be sure to state examples.
This assignment must have in text citations and proper use of APA formating with two references as well as be completly original. Please be an expert in unix programming and Perl as i need someone who can actually write perl scripts not just commands.
|
Acquired new bottling equipment with a list price
: On April 1, Clear Water Co., a water distiller, acquired new bottling equipment with a list price (fair market value) of $350,000. Clear Water received a trade-in allowance of $50,000 on the old equipment of a similar type and paid cash of $300,000
|
|
Describe basic computer hardware component standards
: Describe basic computer hardware component standards. Describe basic hardware devices and their specifications. Describe characteristics of computer hardware device components.
|
|
What is the speed of the ejected electron
: Light of wavelength 345 nm shines on a piece of calcium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of calcium ends up as kinetic energy of the ejected electron.) Work function for calcium..
|
|
Standard deviation-expected return
: What is the expected return of this stock? What is the standard deviation rounded to the nearest whole number
|
|
Convert a unix shell script into a perl script
: Convert a UNIX shell script (User Maintenance) into a Perl script. This Perl script must perform the following tasks: Generate a menu to ask the system administrator for the task that he or she would like to see performed.
|
|
Find the maximum velocity of an ejected electron
: Find the maximum velocity of an ejected electron if the copper surface is illuminated by radiation with a wavelength of 122nm, the longest wavelength line of the Lyman series (transitions to n=1) of hydrogen.
|
|
Explain the lifo methods
: Explain the LIFO methods as given in the points.
|
|
Competitive advantage concepts to explain
: In the early 1980s, United, Delta, and American Airlines each started frequent flier programs as a way to differentiate themselves in response to excess capacity in the industry. Many industry analysts, however, believe that this move had only mix..
|
|
The tax implications will be
: John called you late on Friday afternoon with a simple question. He is considering selling an old a car and wants to know what the tax implications will be.
|