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+.TH TAIL 1
+.SH NAME
+tail \- deliver the last part of a file
+.SH SYNOPSIS
+.B tail
+[
+.RB [\f5+-\fP] \fInumber\fP [\f5lbc\fP][ rf ]
+]
+[
+.I file
+]
+.PP
+.B tail
+[
+.B -fr
+]
+[
+.B -n
+.I nlines
+]
+[
+.B -c
+.I ncharacters
+]
+[
+.I file
+]
+.SH DESCRIPTION
+.I Tail
+copies the named file to the standard output beginning
+at a designated place.
+If no file is named, the standard input is copied.
+.PP
+Copying begins at position
+.BI + number
+measured from the beginning, or
+.BI - number
+from the end of the input.
+.I Number
+is counted in lines, 1K blocks or characters,
+according to the appended flag
+.LR l ,
+.LR b ,
+or
+.LR c .
+Default is
+.B -10l
+(ten ell).
+.PP
+The further flag
+.L r
+causes tail to print lines from the end of the file in reverse order;
+.L f
+(follow) causes
+.I tail,
+after printing to the end, to keep watch and
+print further data as it appears.
+.PP
+The second syntax is that promulgated by POSIX, where the
+numbers of lines (-n) or characters (-c) are specified separately as signed
+integers. Note than an unsigned value is treated as negative,
+ie '-n 2' is equivalent to '-n -2'.
+.PP
+.SH EXAMPLES
+.TP
+.B tail file
+Print the last 10 lines of a file.
+.TP
+.B tail +0f file
+Print a file, and continue to watch
+data accumulate as it grows.
+.br
+According to custom, option
+.BI + number
+counts lines from 1, and counts
+blocks and characters from 0.
+.TP
+.B tail -nlines +3 file
+Print a file starting at line number 3