## custom-ls
### Instructions
Create the script `custom-ls.sh` which will create an alias `custom-ls` .
The alias `custom-ls` :
- shows the file details in long list format.
- does not list group information.
- does not ignore entries starting with `.` .
- prints the allocated size of each file, in blocks.
- sorts by file size, largest first.
Expected behavior:
```console
$ custom-ls
error: command not found: custom-ls
$ ./custom-ls.sh
$ custom-ls .
total ...
7784 -rw-r--r-- 1 < user > 3983261 Dec 17 22:02 .file1 # just an example
3064 -rw-r--r-- 1 < user > 1566444 Dec 17 22:12 file2 # just an example
$
```
### Hints
An alias is a shortcut that references a command. An alias replaces a string that invokes a command in the Linux shell with another user-defined string.
`alias` command instructs the shell to replace one string with another string while executing the commands.
```console
$ alias testcmd="echo 01school"
$ testcmd
01school
$ alias
testcmd='echo 01school'
< ... >
$
```
> However, this update alias gets removed after closing the working environment.
To create and add aliases permanently to your bash shell on Linux and Unix-like systems:
1- Edit the `~/.bashrc` :
```console
vi ~/.bashrc
# or #
nano ~/.bashrc
```
2- Append your bash alias, For example append:
```console
alias testcmd="echo 01school"
```
3- Save and close the file.
4- Activate alias
```console
source ~/.bashrc
```
`unalias` unalias removes each alias name from the current shell execution environment.
```console
$ alias
testcmd='echo 01school'
< ... >
$ unalias testcmd
$ alias
< ... >
$
```
> You have to use Man or Google to know more about commands flags, in order to solve this exercise!
> Google and Man will be your friends!
### References
[alias command in linux with examples. ](https://www.geeksforgeeks.org/alias-command-in-linux-with-examples/ )
[man ls. ](https://man7.org/linux/man-pages/man1/ls.1.html )
