2 * realpath -- canonicalize pathnames, resolving symlinks
4 * usage: realpath [-csv] pathname [pathname...]
6 * options: -c check whether or not each resolved path exists
7 * -s no output, exit status determines whether path is valid
8 * -v produce verbose output
11 * exit status: 0 if all pathnames resolved
12 * 1 if any of the pathname arguments could not be resolved
15 * Bash loadable builtin version
23 #include <sys/types.h>
36 #include "bashgetopt.h"
42 extern char *sh_realpath();
44 realpath_builtin(list)
47 int opt, cflag, vflag, sflag, es;
48 char *r, realbuf[PATH_MAX], *p;
56 vflag = cflag = sflag = 0;
57 reset_internal_getopt();
58 while ((opt = internal_getopt (list, "csv")) != -1) {
79 for (es = EXECUTION_SUCCESS; list; list = list->next) {
81 r = sh_realpath(p, realbuf);
83 es = EXECUTION_FAILURE;
85 builtin_error("%s: cannot resolve: %s", p, strerror(errno));
88 if (cflag && (stat(realbuf, &sb) < 0)) {
89 es = EXECUTION_FAILURE;
91 builtin_error("%s: %s", p, strerror(errno));
97 printf("%s\n", realbuf);
103 char *realpath_doc[] = {
104 "Display the canonicalized version of each PATHNAME argument, resolving",
105 "symbolic links. The -c option checks whether or not each resolved name",
106 "exists. The -s option produces no output; the exit status determines the",
107 "valididty of each PATHNAME. The -v option produces verbose output. The",
108 "exit status is 0 if each PATHNAME was resolved; non-zero otherwise.",
112 struct builtin realpath_struct = {
113 "realpath", /* builtin name */
114 realpath_builtin, /* function implementing the builtin */
115 BUILTIN_ENABLED, /* initial flags for builtin */
116 realpath_doc, /* array of long documentation strings */
117 "realpath [-csv] pathname [pathname...]", /* usage synopsis */
118 0 /* reserved for internal use */