tac – Unix, Linux Command


tac – tac is a Linux command that allows you to see a file line-by-line backwards. It is named by analogy with cat.

tac [OPTION]… [FILE]…

Write each FILE to standard output, last line first. With no FILE, or
when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options

-b, –before
attach the separator before instead of after

-r, –regex
interpret the separator as a regular expression

-s, –separator=STRING
use STRING as the separator instead of newline

–help display this help and exit

output version information and exit

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