Named pipe with shell command date

Question

I want to let a standard user change the system date.

So I created a named pipe. The standard user write a date to the named pipe and a root process listens to it and sets the date accordingly:

(user)

echo 122515502010 > /tmp/mypipe

(root)

date -s < /tmp/mypipe

Unfortunately this doesn't work. Where am I wrong?

I'm doing this from an embedded Linux (busybox) with bash.

michelemarcon · Accepted Answer · 2010-12-28T16:19:05.897

1

Got it!

(root)

read line < mypipe
date -s $line

Thank you everybody! ;)

edited Dec 28 '10 at 16:19

answered Dec 28 '10 at 16:02

michelemarcon

1

As a shortcut, note that `read` will automatically populate `$REPLY` (unless you override the return variable name, as done in your example) – danlefree Dec 29 '10 at 01:18

score 0 · Answer 2 · answered Dec 28 '10 at 16:02

0

Why not give the user access to date via sudo ?

answered Dec 28 '10 at 16:02

user9517

busybox doesn't support sudo (at least the version I'm using). – michelemarcon Dec 28 '10 at 16:03

2 Answers2