tac (Unix)

From Wikipedia, the free encyclopedia
Jump to: navigation, search

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

Usage:

Usage: 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 too.
  -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
      --version  output version information and exit

See also[edit]

External links[edit]

Manual pages[edit]

tac - Linux Command Description