# 9pfuse is more locked down and does not sudo but has issues with chmod, etc.
put these in the shell profile:
 PLAN9=/home/j/dev/apps/plan9/plan9port; export PLAN9
 PATH=$PATH:$PLAN9/bin; export PATH
# ensure that the below line to set authdom and auth is in $PLAN9/ndb/local:
authdom=9front auth=cirno
# cat mypasswords
echo 'key dom=9front proto=p9sk1 role=client user=joe !password=joe12345' >/home/j/dev/apps/plan9/custom/cirno/backup-disks-setup/mypasswords

factotum -n
9p write -l factotum/ctl </home/j/dev/apps/plan9/custom/cirno/backup-disks-setup/mypasswords
# below command does not work without the PLAN9 prefix
srv -a -k user=joe cirno:30564 fossil
namespace
# 9pfuse has issues changing permissions, use the patch from
# https://github.com/9fans/plan9port/issues/81
9pfuse unix\!$(namespace)/fossil /home/j/fossil-backups