pages for commands like this often go into a lot more detail than the man
pages. Check out info ls
for a detailed description of all its options.
In addition to the name of each file, print the file type, file
mode bits, number of hard links, owner name, group name, size, and
timestamp (*note Formatting file timestamps::), normally the
modification time. Print question marks for information that
cannot be determined.
Normally the size is printed as a byte count without punctuation,
but this can be overridden (*note Block size::). For example, `-h'
prints an abbreviated, human-readable count, and
`--block-size="'1"' prints a byte count with the thousands
separator of the current locale.
For each directory that is listed, preface the files with a line
`total BLOCKS', where BLOCKS is the total disk allocation for all
files in that directory. The block size currently defaults to 1024
bytes, but this can be overridden (*note Block size::). The
BLOCKS computed counts each hard link separately; this is arguably