From 4052fea817e4fbe0f09f3f54bc178e32d312a86b Mon Sep 17 00:00:00 2001 From: Miika Turkia Date: Mon, 28 Dec 2015 15:05:15 +0200 Subject: Improve group information on USB device As the group can be something else than dialout on some systems, mention this on user manual. Signed-off-by: Miika Turkia Signed-off-by: Dirk Hohndel --- Documentation/user-manual.txt | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt index 375734808..8a20909a0 100644 --- a/Documentation/user-manual.txt +++ b/Documentation/user-manual.txt @@ -3548,8 +3548,12 @@ USB port. Ensuring the user has write permission to the USB serial port: On Unix-like operating systems the USB ports can only be accessed by users who -are members -of the +dialout+ group. If one is not root, one may not be a member of +are members special group that can be e.g. ++dialout+ or +uucp+. This can be verified by listing the appropriate +device permissions e.g. by +ls -l /dev/ttyUSB0+. Note that the number in +the file name depends on how many USB devices you have connected, and +must be adjusted appropriately. +If one is not root, one may not be a member of that group and won't be able to use the USB port. Let us assume one's username is 'johnB'. -- cgit v1.2.3-70-g09d2