asuschroREDACT@penguin:~$ adb version
Android Debug Bridge version 1.0.41
Version 28.0.2-debian
Installed as /usr/lib/android-sdk/platform-tools/adb
asuschroREDACT@penguin:~$ adb shell
B130DL:/ $ adb version
/system/bin/sh: adb: inaccessible or not found
127|B130DL:/ $ adb
/system/bin/sh: adb: inaccessible or not found
127|B130DL:/ $ ./adb
/system/bin/sh: ./adb: inaccessible or not found
127|B130DL:/ $ ^C
130|B130DL:/ $ ^C
130|B130DL:/ $ exit
asuschroREDACT@penguin:~$