From 3a9241add947cb6d24b5de7a8927517426a78795 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Sat, 25 Aug 2012 14:25:22 -0500 Subject: Move commands into "posix", "lsb", and "other" menus/directories. --- toys/other/which.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 toys/other/which.c (limited to 'toys/other/which.c') diff --git a/toys/other/which.c b/toys/other/which.c new file mode 100644 index 00000000..4923859c --- /dev/null +++ b/toys/other/which.c @@ -0,0 +1,71 @@ +/* vi: set sw=4 ts=4: + * + * which.c - Find executable files in $PATH. + * + * Copyright 2006 Rob landley + * + * Not in SUSv3. + +USE_WHICH(NEWTOY(which, "<1a", TOYFLAG_USR|TOYFLAG_BIN)) + +config WHICH + bool "which" + default y + help + usage: which [-a] filename ... + + Search $PATH for executable files matching filename(s). + + -a Show all matches +*/ +#include "toys.h" + +// Find an exectuable file either at a path with a slash in it (absolute or +// relative to current directory), or in $PATH. Returns absolute path to file, +// or NULL if not found. + +static int which_in_path(char *filename) +{ + struct string_list *list; + + // If they gave us a path, don't worry about $PATH or -a + + if (strchr(filename, '/')) { + // Confirm it has the executable bit set, and it's not a directory. + if (!access(filename, X_OK)) { + struct stat st; + + if (!stat(filename, &st) && S_ISREG(st.st_mode)) { + puts(filename); + return 0; + } + return 1; + } + } + + // Search $PATH for matches. + list = find_in_path(getenv("PATH"), filename); + if (!list) return 1; + + // Print out matches + while (list) { + if (!access(list->str, X_OK)) { + puts(list->str); + // If we should stop at one match, do so + if (!toys.optflags) { + llist_traverse(list, free); + break; + } + } + free(llist_pop(&list)); + } + + return 0; +} + +void which_main(void) +{ + int i; + for (i=0; toys.optargs[i]; i++) + toys.exitval |= which_in_path(toys.optargs[i]); +} -- cgit v1.2.3