Allow "tail -X" as well as "tail -n X". diff --git a/toys/posix/tail.c b/toys/posix/tail.c index e92c044..3604582 100644 --- a/toys/posix/tail.c +++ b/toys/posix/tail.c @@ -4,7 +4,7 @@ * * See http://opengroup.org/onlinepubs/9699919799/utilities/tail.html
-USE_TAIL(NEWTOY(tail, "fc-n-[-cn]", TOYFLAG_BIN)) +USE_TAIL(NEWTOY(tail, "?fc-n-[-cn]", TOYFLAG_BIN)) config TAIL bool "tail" @@ -213,10 +213,14 @@ static void do_tail(int fd, char *name) void tail_main(void) { - // if nothing specified, default -n to -10 - if (!(toys.optflags&(FLAG_n|FLAG_c))) TT.lines = -10; + char **args = toys.optargs; - loopfiles(toys.optargs, do_tail); + if (*args && **args == '-') { + TT.lines = xstrtol(*(args++), NULL, 10); + toys.optc--; + } else if (!(toys.optflags&(FLAG_n|FLAG_c))) TT.lines = -10; + + loopfiles(args, do_tail); // do -f stuff } _______________________________________________ Toybox mailing list Toybox@lists.landley.net http://lists.landley.net/listinfo.cgi/toybox-landley.net