$ ls -l ~/tools

# try something I built

Both run entirely in your browser. Nothing you type is sent anywhere.

terminal.sh-rwxr-xr-x

guest@portfolio:~$ grep -c Failed /var/log/auth.log
3
guest@portfolio:~$ dir
dir: command not found
Hint: on Linux, use "ls" instead of "dir".

C:\Users\guest> tasklist | findstr exe
explorer.exe     4120 Console    1   98,204 K

A Linux (bash) and Windows (CMD) terminal side by side: ~90 commands, pipes, redirects, permissions and a Linux ↔ Windows cheat sheet.

$ ./terminal.sh

subnet-calc-rwxr-xr-x

$ subnet-calc 192.168.1.10/24
network    192.168.1.0/24
broadcast  192.168.1.255
hosts      192.168.1.1 – 192.168.1.254 (254)
binary     11000000.10101000.00000001.00001010

Network and broadcast addresses, host range, masks, a colour-coded binary view and a subnet-splitting table.

$ ./subnet-calc

more tools coming — suggestions welcome via contact.sh