.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.43.3. .TH TAC "1" "March 2015" "GNU coreutils 8.23" "User Commands" .SH NAME tac \- concatenate and print files in reverse .SH SYNOPSIS .B tac [\fIOPTION\fR]... [\fIFILE\fR]... .SH DESCRIPTION .\" Add any additional description here .PP Write each FILE to standard output, last line first. With no FILE, or when FILE is \-, read standard input. .PP Mandatory arguments to long options are mandatory for short options too. .TP \fB\-b\fR, \fB\-\-before\fR attach the separator before instead of after .TP \fB\-r\fR, \fB\-\-regex\fR interpret the separator as a regular expression .TP \fB\-s\fR, \fB\-\-separator\fR=\fISTRING\fR use STRING as the separator instead of newline .TP \fB\-\-help\fR display this help and exit .TP \fB\-\-version\fR output version information and exit .SH AUTHOR Written by Jay Lepreau and David MacKenzie. .SH "REPORTING BUGS" GNU coreutils online help: .br Report tac translation bugs to .SH COPYRIGHT Copyright \(co 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later . .br This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. .SH "SEE ALSO" \fBrev\fP(1) .PP .br Full documentation at: .br or available locally via: info \(aq(coreutils) tac invocation\(aq