Linux-Terminal Commands

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The command to find out the number of "words" in a file is

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grep

cat

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The command to copy a file called "noun.txt" from /home/students/ to pwd is

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cp noun.txt /home/students/

cp /home/students

cp /home/students/noun.txt pwd

cp /home/students/noun.txt .

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The command to extract only the column "age" from the file called "info.txt" is:

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How to "grep" words with the following info: string, stoping, steering, stinking, strong

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^str?([oei]+)([prnk]+)?[io]?ng$

^str?([oei]+)?([prnk]+)?iong$

^str([oei]+)?([prnk]+)?[io]?ng$

^str?([oei]+)?([prnk]+)?[io]?ng$

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Sort the following from the file "sort.txt"

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