chdir(2)
So today at work another developer many years my senior, with many more years
experience than I, came to me with a Unixy problem.
"When I have a program, how can I have it so the current working directory
for all processes it starts isn't the one that it started in?"
"chdir."
"No, I want so that if this process starts something like ls, when ls stats
'dot' I want 'dot' to be the directory that process wants it to be, not the
directory that process was started from."
After about 15 minutes of me suggesting chdir while he said that's not what
he wanted but then describing chdir, I finally wrote something along the lines
of the following
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int
main (int argc, char *argv[])
{
system("/bin/pwd");
system("/bin/ls");
chdir("/tmp");
system("/bin/pwd");
system("/bin/ls");
chdir("/etc");
system("/bin/pwd");
system("/bin/ls");
chdir("/");
system("/bin/pwd");
system("/bin/ls");
return 0;
}
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