Question

--> Take a copy of the / etc / passwd file to the root user's home directory.
--> Transfer the username-userID information in this file to the file named user_idler.txt.
--> Export the file named user_idler.txt in alphabetical order to user_list.txt file
--> Show how many lines the file user_idler.txt consists of.
--> Find the number of lines for the letter in the file named user_idler.txt

Answer 1

Take a copy of the / etc / passwd file to the root user's home directory

Command:

cp /etc/passwd

The cp command is a command-line utility for copying files and directories.

Transfer the username-userID information in this file to the file named user_idler.txt

awk -F: '{print $1,$3}' /etc/passwd > user_idler.txt

awk command searches files for text containing a pattern. When a line or text matches, awk performs a specific action on that line/text

Export the file named user_idler.txt in alphabetical order to user_list.txt file

sort user_idler.txt > user_list.txt

SORT command sorts the contents of a text file, line by line.

Find the number of lines for the letter in the file named user_idler.txt

wc -l user_idler.txt

The wc (word count) command in Unix/Linux operating systems is used to find out number of newline count, word count, byte and characters count in a files specified by the file arguments. The

Find the number of lines for the letter in the file named user_idler.txt

I could not understand the question, for what letter I should count the number of lines?? please specify this in comment and I'll try to answer that. Thanks for understanding

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