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RHCSA - Red Hat Certified System Administrator: Questions & Verified Answers
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RHCSA - Red Hat Certified System Administrator: Questions & Verified Answers
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RHCSA - Red Hat Certified System Administrator:Questions & Verified Answers
Change your password Right Ans - $ passwd
Display time and date Right Ans - $ date
Display the current time in the following format: HH:MM:SS A/PM Right
Ans - $ date +%r
Use $ date --help or $ man date
to get the format options
Determine the file type Right Ans - $ file FILE
Reuse the argument from the previous command Right Ans - $ command
<Esc> .
display the size of a file Right Ans - $ wc FILE
Display the number of lines in FILE Right Ans - $ wc -l FILE
Display the number of words in FILE Right Ans - $ wc -w FILE
Display the number of characters in FILE Right Ans - $ wc -c FILE
Display the first 10 lines of FILE Right Ans - $ head FILE
Display the last 10 lines of FILE Right Ans - $ tail FILE
Display the last 20 lines of FILE Right Ans - $ tail -n 20 FILE
Use bash history to select a command Right Ans - $ history
$ !COMMAND_NUMBER (ex: $ !52)
close the bash shell Right Ans - $ exit
Lock Screen Right Ans - CTRL + ALT + L
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