2018-05-31 12:01 GMT+02:00 Leonid Isaev via arch-general <arch-general@xxxxxxxxxxxxx>: > On Thu, May 31, 2018 at 10:44:25AM +0100, Ralph Corderoy wrote: >> Hi Maykel, >> >> > I need define variable called ip with current ip address machine... >> > And when reboot machine, the variable ip always has ip address. >> >> Yes, I think we all figured that bit out. :-) >> But why; what's going to be using that IP-address environment variable, >> and when? > > Indeed. Is it for consumption of users whose shell you don't know? Is it for > scripts, like cron jobs? > > In the former case, see what is in /etc/shells, and drop a script to > /etc/profile.d, one for each shell. But that will be for login shells. In the > latter case, I am afraid you need to define it each time... > > Finally, a bit of a puzzle, what are you going to do when the network goes > down, i.e. should the variable be unset or updated? In other words, how certain > are you that the IP address remains unchanged throughout the machine uptime? > > -- > Leonid Isaev I need this for docker. I have docker services in which I use variables and I want to pass the always updated ip variable. If the network goes, it is not a problem, it will always have the same fixed static ip. But this way I leave docker generalized for any pc.
