35 lines
848 B
C
Executable File
35 lines
848 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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/*
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The -L option prints the logical path, corresponding to the PWD envar.
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-P prints the physical path. The logical path includes any symbolic
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links followed to get there, where as the physical path doesn't. So,
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for example, if /lib links to /usr/lib, then if we cd /lib, pwd -L will
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print /lib, whereas pwd -P will print /usr/lib, even though cd .. will
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take us back to /
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*/
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int mode = 01; /* 01: -L, 02: -P */
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char c;
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while((c = getopt(argc, argv, "LP")) != -1) {
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switch(c) {
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case 'L': mode = 01; break;
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case 'P': mode = 02; break;
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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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