LPI (Linux Professional Institute) Entry Level Linux Essentials Certificate of Achievement

The r bit is set. ✘ The file must end with .sh. ✘ The first line starts with #!/bin/bash. ✘ /bin/bash has to be run in debug mode. ✔ Scripts are never executable files. ✔

The first 20 lines of test.txt. ✘ The last 20 lines of test.txt omitting the blank lines. ✘ The last 20 lines of test.txt with line numbers. ✘ The last 20 lines of test.txt including blank lines. ✔

Because, if data.txt is empty now, it must have been empty before. ✘ Because sort cannot sort text files, only binary files. ✘ Because sort detects that both files are the same. ✘ Because the file gets truncated before sort is executed. ✔

do ✘ then ✘ enod ✘ fi ✔ run ✔

"$ARG2"

✘ $1 ✘ "$2" ✘ "$1" ✔ '$2' ✔

actdat=`date` ✘ set actdat='date' ✘ date | actdat ✘ date > $actdat ✔ actdat=date ✔

find . -name MyFile.xml ✘ grep MyFile.xml | find ✘ grep -r MyFile.xml . ✘ less MyFile.xml ✔ search Myfile.xml ./ ✔

tar /home backup.tar ✘ tar -cf /home backup.tar ✘ tar -xf /home backup.tar ✘ tar -xf backup.tar /home ✔ tar -cf backup.tar /home ✔

anbncn ✘ abc ✘ $token$token$token ✘ {a}{b}{c} ✔ a b c ✔

head -n 1 foo.txt ✘ tail foo.txt ✘ last -n 1 foo.txt ✘ tail -n 1 foo.txt ✔