ls

Question 1

ls

Answer 1

List information about the FILEs (the current directory by default). Sort entries alphabetically if none of -cftuvSUX nor –sort is specified.

Question 2

ls

• a
• l
• h
• F
• r
• R

Answer 2

• a, –all, Do not ignore entries starting with .
• l, Use a long listing format.
• h, –human-readable, With -l and -s, print sizes like 234M, 2G, etc
• F, –classify, Append indicator (one of */=>@|) to entries.
• r, –reverse, Reverse order while sorting.
• R, –recursive, List subdirectories recursively.

Question 3

ls

• s
• t
• i
• d
• n

Answer 3

• s, –size, Print allocated size of each file.
• t, Sort by modification time, newest first.
• i, –inode, Print index number of each file.
• d, –directory, List directories themselves, not their contents.
• n, –numeric-uid-gid, Like -l, but lists numeric user and group IDs.