.TH TAIL 1.SH NAMEtail \- 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 Tailcopies the named file to the standard output beginningat a designated place.If no file is named, the standard input is copied..PPCopying begins at position.BI + numbermeasured from the beginning, or.BI - numberfrom the end of the input..I Numberis 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)..PPThe further flag.L rcauses 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 andprint further data as it appears..PPThe second syntax is that promulgated by POSIX, where thenumbers of lines (-n) or characters (-c) are specified separately as signedintegers. Note than an unsigned value is treated as negative,ie '-n 2' is equivalent to '-n -2'..PP.SH EXAMPLES.TP.B tail filePrint the last 10 lines of a file..TP.B tail +0f filePrint a file, and continue to watchdata accumulate as it grows..brAccording to custom, option.BI + numbercounts lines from 1, and countsblocks and characters from 0..TP.B tail -nlines +3 filePrint a file starting at line number 3