34 lines
636 B
C
Executable File
34 lines
636 B
C
Executable File
#define _POSIX_C_SOURCE 200809L
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char * argv[]) {
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int mode = 01; /* 01: print PWD -L, 02: print physical path -P */
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if(argc > 1) {
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for(int i = 1; i < argc; i++) {
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if(argv[i][1] == 'L' && argv[i][2] == '\0') {
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mode = 01;
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}
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else if(argv[i][1] == 'P' && argv[i][2] == '\0') {
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mode = 02;
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}
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else {
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fprintf(stderr, "%s: invalid option: %s\n", argv[0], argv[i]);
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exit(1);
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}
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}
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}
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if(mode == 01) {
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printf("%s\n", getenv("PWD"));
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}
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else {
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printf("%s\n", getcwd(NULL, 0));
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}
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return 0;
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}
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