ls is a command used for listing directories in a file system. The behavior of the command depends on the options it receives from its arguments.
usage: ft_ls [-lRartG1TDSUuYAnf] [file ...]
The goal of this project was to reimplement the behavior of this command with a minimum of options.
Without arguments nor options, it lists the files and directories of the current directory, alphabetically:
It can list directories which are specified in arguments:
And with some option combinations, we can change its behavior:
Here we gave 3 different options, Y, l and t. The Y option colors the output, the l option prints more details, and the t option sort the files by modification time.
Here is a table of all the available options
| Option | Description |
|---|---|
-l |
Long listing format |
-R |
List subdirectories recursively |
-a |
List files and directories that start with a . (dot) |
-A |
Same as above (-a) but do not list the current directory alias . and parent directory alias .. |
-r |
Print the sorted list in a reverse order |
-t |
Sort by modification time |
-G |
Colorize the output following the LSCOLORS environnement variable |
-1 |
List one file per line |
-T |
With the -l option, also prints the second and the year |
-D |
Prints the full path of each files |
-S |
Sort by file size |
-U |
Do not sort |
-u |
Sort by access time |
-Y |
Colorize the output but with the a default LSCOLORS |
-n |
List numeric user and group IDs |
-f |
Do not sort and print by the system order |