UNIX SYSTEMS\u00a0 CLASS\u00a0\u00a0Primary Task Response:\u00a0Within the Discussion Board area, write 300\u2013400 words that respond to the following questions with your thoughts, ideas, and comments. This will be the foundation for future discussions with your classmates. Be substantive and clear, and use examples to reinforce your ideas.
Practice Assignment
Your primary post should include the following:
To ensure the security of the files used by the new Web site, files need to access controls that limit which users can view and execute them. To further your understanding of file permissions, describe in detail these 5 file listings, explain all items on each line, explain what they specify or mean, and give the chmod command to set files with these permissions: <\/p>\n
It is also a necessity to know and understand regular expressions, not only at the UNIX command line, but editors and some programs use them quite extensively. Explain the following Metacharacters\/Regular Expressions: <\/p>\n
Give a regular expression to match the following:All files that end in txt
Files that have a second character of a and end in sh
Any file that starts with a number
A blank line\u00a0
A traditional 10-digit U.S.-based phone number, in the following format:(407) 555-1212 <\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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