Termux app default file location

[Anonymo-ambivert]

In termux app, files/home location available but files/usr location not available. I installed some packages like apache2 and I get to know from Internet that -these packages are stored default in files/usr/ location.
Please someone provide suggestion to access files/usr/ in my android termux app

[agnostic-apollo]

echo ls $PREFIX

https://github.com/termux/termux-packages/wiki/Termux-file-system-layout

[Anonymo-ambivert]

echo command is just printing what we given as Input.But it's not actually locating the folder. If we give pwd i.e.,present loc , it should show files/usr .Its not happens in case of echo command
Please provide solution for this to access installed package loc

[agnostic-apollo]

echo was a left over typo. $PREFIX env variable defines the location and expands to /data/data/com.termux/files/usr by default. Use it however you want in shell scripts.