Index: head/usr.bin/head/head.1 =================================================================== --- head/usr.bin/head/head.1 +++ head/usr.bin/head/head.1 @@ -28,7 +28,7 @@ .\" @(#)head.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd March 16, 2013 +.Dd April 10, 2018 .Dt HEAD 1 .Os .Sh NAME @@ -48,6 +48,18 @@ If .Ar count is omitted it defaults to 10. +.Pp +The following options are available: +.Bl -tag -width indent +.It Fl c Ar bytes , Fl -bytes Ns = Ns Ar bytes +Print +.Ar bytes +of each of the specified files. +.It Fl n Ar count , Fl -lines Ns = Ns Ar count +Print +.Ar count +lines of each of the specified files. +.El .Pp If more than a single file is specified, each file is preceded by a header consisting of the string Index: head/usr.bin/head/head.c =================================================================== --- head/usr.bin/head/head.c +++ head/usr.bin/head/head.c @@ -47,6 +47,7 @@ #include #include +#include #include #include #include @@ -64,6 +65,13 @@ static void obsolete(char *[]); static void usage(void); +static const struct option long_opts[] = +{ + {"bytes", required_argument, NULL, 'c'}, + {"lines", required_argument, NULL, 'n'}, + {NULL, no_argument, NULL, 0} +}; + int main(int argc, char *argv[]) { @@ -74,7 +82,7 @@ char *ep; obsolete(argv); - while ((ch = getopt(argc, argv, "n:c:")) != -1) + while ((ch = getopt_long(argc, argv, "+n:c:", long_opts, NULL)) != -1) switch(ch) { case 'c': bytecnt = strtoimax(optarg, &ep, 10);