In some roms(tested on Ricedroid 10.2) nsenter -t 1 -m sh gives the following error
ScriptException occurred on external_files backup: com.machiav3lli.backup.actions.BaseAppAction$ScriptException: nsenter: /proc/0/ns/mnt: No such file or directory - nsenter: /proc/0/ns/mnt: No such file or directory
Using nsenter --mount=/proc/1/ns/mnt sh should work in every cases.
In some roms(tested on Ricedroid 10.2) nsenter -t 1 -m sh gives the following error
ScriptException occurred on external_files backup: com.machiav3lli.backup.actions.BaseAppAction$ScriptException: nsenter: /proc/0/ns/mnt: No such file or directory - nsenter: /proc/0/ns/mnt: No such file or directory
Using nsenter --mount=/proc/1/ns/mnt sh should work in every cases.