gistfile1.txt

[grahamc@Petunia:~]$ type bash
bash is /run/current-system/sw/bin/bash

[grahamc@Petunia:~]$ which bash
/run/current-system/sw/bin/bash

[grahamc@Petunia:~]$ bash
lol not this time

[grahamc@Petunia:~]$ /run/current-system/sw/bin/bash
haha not this one either




The secret is:

[grahamc@Petunia:~]$ which() { echo "/run/current-system/sw/bin/bash"  }              
[grahamc@Petunia:~]$ type() { echo "bash is /run/current-system/sw/bin/bash" }
[grahamc@Petunia:~]$ bash() { echo "lol not this time" }
[grahamc@Petunia:~]$ /run/current-system/sw/bin/bash() { echo "haha not this one either" }