GROUPS Command

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JANOS implements a file permission scheme modeled after Unix file permissions. Those familiar with the Linux recognize the permissions in JANOS file listings.

bruce_dev /> ls -v
total 12
drwxrwxrwx   1 root      root          10 Nov 28 10:23 .
drwxrwxrwx   1 root      root          10 Nov 28 10:23 ..
dr-xr-xr-x   1 root      root           1 Dec 31 1999  etc
drwxr-xr-x   1 root      root          49 Nov 28 10:16 flash
drwxrwxrwx   1 root      root           0 Dec 31 1999  temp
-rw-r--r--   1 root      root       39023 Nov 28 14:50 jniorsys.log
-rw-r--r--   1 root      root        1011 Nov 28 10:23 jniorboot.log
-rw-r--r--   1 root      root        1082 Nov 28 10:16 jniorboot.log.bak
-rw-r--r--   1 jnior     root       20585 Nov 22 11:52 manifest.json
-rw-r--r--   1 jnior     root        3332 Nov 21 13:31 jniorio.log
-rw-r--r--   1 jnior     root        1589 Nov 21 13:22 auxio.log
-rw-r--r--   1 root      root         177 Nov 07 14:10 access.log
  1891.7 KB available

bruce_dev />

There are 3 groups of ‘rwx’ permissions. The first is for the file owner. The second for the group associated with the file. And, the third is for everyone else. This implies some kind of User Groups. Note that on the Series 3 there are no User Groups and so file permissions were somewhat shortened.

JANOS allows you to define a User Group using the GROUPADD command. There is a root group by default to which noone belongs.

The GROUPS command lists the defined user groups and any users associated with each.

bruce_dev /> groups
 root        0    
 techadmin   2    
 techs       1    tech      

bruce_dev />

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This post was written by Bruce Cloutier

November 28, 2017 3:00 pm