I need a command that retrieves the last modified date and another that gives the size of a file.
I've looked everywhere, and I cannot find commands like this.
LS will not work.
The most common command for this is
stat(1). Some variants, notably GNU stat, allow specification of the output format, which simplifies parsing.
$ stat t.txt File: ‘t.txt’ Size: 48 Blocks: 8 IO Block: 4096 regular file Device: fd00h/64768d Inode: 7078223 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 500/ ignacio) Gid: ( 500/ ignacio) Context: unconfined_u:object_r:user_home_t:s0 Access: 2013-06-25 09:04:32.600422989 -0400 Modify: 2013-06-24 00:10:57.925679368 -0400 Change: 2013-06-24 00:10:57.970679307 -0400 Birth: -