Enrico Fraccaroli
33 lines
855 B
C
33 lines
855 B
C
/// MentOS, The Mentoring Operating system project
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/// @file help.c
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/// @brief Shows the available commands.
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/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include <strerror.h>
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#include <sys/dirent.h>
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#include <sys/unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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int main(int argc, char *argv[])
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{
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int fd = open("/bin", O_RDONLY | O_DIRECTORY, 0);
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if (fd == -1) {
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printf("%s: cannot access '/bin': %s\n\n", argv[0], strerror(errno));
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return 1;
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}
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dirent_t dent;
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int per_line = 0;
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while (getdents(fd, &dent, sizeof(dirent_t)) == sizeof(dirent_t)) {
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printf("%10s ", dent.d_name);
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if (++per_line == 6) {
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per_line = 0;
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putchar('\n');
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}
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}
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putchar('\n');
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close(fd);
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return 0;
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}
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