head command example
Output the first part of files, prints the first part (10 lines by default) of each file.
SYNTAX
head [options]... [file]...
Examples
Extract the first 85 lines from a file:
$ head -5 file.txt
this is test1.
this is test2.
this is test3.
this is test4.
this is test5.
this is test1.
this is test2.
this is test3.
this is test4.
this is test5.
Extract lines 40-50 from a file, first using head to get the first 50 lines then tail to get the last 10:
$ head -50 file.txt | tail -10
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