getcwd(3C) getcwd(3C)
NAME
getcwd - get pathname of current working directory
SYNOPSIS
#include <unistd.h>
char *getcwd(char *buf, int size);
DESCRIPTION
getcwd() returns a pointer to the current directory pathname. The
value of size must be at least one greater than the length of the
pathname to be returned.
If buf is not NULL, the pathname will be stored in the space pointed
to by buf.
If buf is a null pointer, getcwd() will obtain size bytes of space
using malloc(3C). In this case, the pointer returned by getcwd() may
be used as the argument in a subsequent call to free.
getcwd() will fail if one or more of the following are true:
EACCES A parent directory cannot be read to get its name.
EINVAL size is equal to 0.
ERANGE size is less than 0 or is greater than 0 and less than the
length of the pathname plus 1.
EXAMPLE
Here is a program that prints the current working directory.
#include <unistd.h>
#include <stdio.h>
main()
{
char *cwd;
if ((cwd = getcwd(NULL, 64)) == NULL)
{
perror("pwd");
exit(2);
}
(void)printf("%s\n", cwd);
return(0);
}
RESULT
Returns NULL with errno set if size is not large enough, or if an
error occurs in a lower-level function.
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getcwd(3C) getcwd(3C)
SEE ALSO
malloc(3C).
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