TEXT FILE MANIPULATION





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TEXT FILE MANIPULATION

Capability

Unix and Cygwin

Windows

Shows the contents of a file cat

file

type file

Shows the contents of a file in reverse order (last line first, first line last)

tac file

 

Shows the contents of a file in reverse order, line by line (line reads right to left instead of left to right)

rev file

Searches for content in a file

grep this file

findstr this file

Searches for content in a file that does not match a pattern

grep –v this file

 

Extracts the contents of a file based on delimiter char (such as a TAB-separated file or CSV file) and shows fields n, or n:n

cut –d‘char’ –fn file example: cut -d‘:’ -f1,2 /etc/passwd

 

Replaces some content in a file with other content

sed –i s/this/that/ file

 

Shows the first n lines of a file

head –n file

 

Shows the last n lines of a file

tail –n file

 

Shows the last lines of a file, even as new lines are appended

tail –f file

 
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