02-03-2017
Quote:
Originally Posted by
RudiC
Why should grep s try to match an S ? And, recheck your conclusions (what does and when applies the || ?).
Just making sure we're not talking past each other here. The file names are all supposed to be lower case. So
grep s is only looking for a lower case "s".
|| Now I see, I believe switched that up. You only reach the right side, when the left side is false.
So to summarize
1. I'm kinda at a loss here. The answer is probably super simple, but I just don't get it. Could it be only 1 time. Since we don't reach that part anymore because there's no loop for it?
2. 15 times.
3. 8 times, since we only reach
grep r, when there's no "s" in a file name.
4. 2 times, since there are only 2 items with neither "s" or "r"
5. 1 time.
EDIT: WAIT, now I get it.
1. 16 times. Since we have 15 files and then another time for the EoF.
2. 15 times. Because we have to check every single one for an "s"
3. 8 times. Since
grep s is false 8 times.
4. 2 times. Since that's the amount of items with neither an "s" nor an "r".
5. 1 time.
Last edited by Eggsy; 02-03-2017 at 10:52 AM..
Reason: I think I got it
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LEARN ABOUT MOJAVE
lutimes
LUTIMES(3) BSD Library Functions Manual LUTIMES(3)
NAME
lutimes -- set file access and modification times of symlink
SYNOPSIS
#include <sys/time.h>
int
lutimes(const char *path, struct timeval times[2]);
DESCRIPTION
The access and modification times of the file named by path are changed as specified by the argument times, even if path specifies a symbolic
link (for utimes(2) the times of the file referenced by the symbolic link are changed).
If times is NULL, the access and modification times are set to the current time. The caller must be the owner of the file, have permission
to write the file, or be the super-user.
If times is non-NULL, it is assumed to point to an array of two timeval structures. The access time is set to the value of the first ele-
ment, and the modification time is set to the value of the second element. The caller must be the owner of the file or be the super-user.
In either case, the inode-change-time of the file is set to the current time.
NOTE
Instead of being a system call, lutimes() is emulated using setattrlist(2). Not all file systems support setattrlist(2).
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, -1 is returned and the global variable errno is set to indicate the error.
ERRORS
The lutimes() call may return the same errors as utimes(2) and setattrlist(2).
SEE ALSO
utimes(2), setattrlist(2)
BSD
Aug 13, 2006 BSD