Harry Putnam wrote:
"John W. Krahn"<jwkr...@shaw.ca> writes:
First, thanks for the input.
[...]
my $exe = 33261;
Or:
my $exe = 0100755;
Where does that come from? And it appears some kind of conversion
must take place. If you print $exe right after assigning it 0100755,
it still shows 33261.
0100755 is the octal representation of the digital number 33261. I used
octal because stat(2) describes the mode bits as octal numbers:
$ man 2 stat
[snip]
The following flags are defined for the st_mode field:
S_IFMT 0170000 bit mask for the file type bit fields
S_IFSOCK 0140000 socket
S_IFLNK 0120000 symbolic link
S_IFREG 0100000 regular file
S_IFBLK 0060000 block device
S_IFDIR 0040000 directory
S_IFCHR 0020000 character device
S_IFIFO 0010000 FIFO
S_ISUID 0004000 set UID bit
S_ISGID 0002000 set-group-ID bit (see below)
S_ISVTX 0001000 sticky bit (see below)
S_IRWXU 00700 mask for file owner permissions
S_IRUSR 00400 owner has read permission
S_IWUSR 00200 owner has write permission
S_IXUSR 00100 owner has execute permission
S_IRWXG 00070 mask for group permissions
S_IRGRP 00040 group has read permission
S_IWGRP 00020 group has write permission
S_IXGRP 00010 group has execute permission
S_IRWXO 00007 mask for permissions for others (not in group)
S_IROTH 00004 others have read permission
S_IWOTH 00002 others have write permission
S_IXOTH 00001 others have execute permission
Where the first three octal digits (100) define the file type and the
last three octal digits (755) define the read/write/execute permissions.
John
--
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