The ‘history’ command can be used to get the list of commands that we are executed.
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How do you write the contents of 3 files into a single file?
cat file1 file2 file3 > file
Display all the files in current directory sorted by size?
ls -l | grep ‘^-‘ | awk ‘{print $5,$9}’ |sort -n|awk ‘{print $2}’
What is the difference between join -v and join -a?
join -v : outputs only matched lines between two files. join -a : In addition to the matched lines, this will output unmatched lines also.