Head Command


head command by default displays the first 10 lines of a file.

display 20 lines in a file 

head -n 20 <file_name>

or you can also use the below

head -20 <file_name>

Display 200 bytes of data from the file

head -c 200 <file_name>

Skill last 28 lines  // it only skips the last 28 lines

head -n -28 <file_name>


-- Head command to fetch lines - particular lines using pipe "|" symbol

head -n 23 movies.txt | tail -n 8 

-- now we want to display only those movies that has 2009 as their year






head -n 23 movies.txt | tail -n 8 | grep 2009


















$ head -n 10 movies.txt | grep 2010

Search in process result

// this will display only those process that have the keywork monitor in them

ps -ef | grep monitor   

Display only specific file or folder

ls -l | grep -i Folder   // -i says ignore case -- non case senstive.



















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