.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.3. .TH TAC "1" "October 2021" "GNU coreutils 8.32" "User Commands" .SH NAME tac \- concatenate and print files in reverse .SH SYNOPSIS .B tac [\fI\,OPTION\/\fR]... [\fI\,FILE\/\fR]... .SH DESCRIPTION .\" Add any additional description here .PP Write each FILE to standard output, last line first. .PP 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=\fI\,STRING\/\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 any translation bugs to .SH COPYRIGHT Copyright \(co 2020 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 .br or available locally via: info \(aq(coreutils) tac invocation\(aq