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Just curious: Which Editor Mode do you use in bash?

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Posted in Linux commands

systemd, Part I

For my sensor network I run a server process, which collects the data from several sensors. This is a sort of a daemon. In a first version it was started in a crontab with the time “@reboot”. But during the development I had to restart it every now and then: search the PID, kill it, start it in the background.

Isn’t there a better way? systemd to the rescue. In this first systemd post I will install a service file, so that the process can be started and stopped from the root account.

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Posted in bash

Changing directories

Everyone knows the command cd – everyone uses it several times a day. (OK – not everyone, but every Linux user.) Most of us know, that we can change back to the last directory with

$ cd -

E.g.:

$ pwd
/home/maker/docs/sensors
$ cd /opt/sensors/bmp280
$ pwd
/opt/sensors/bmp280
$ cd -
$ pwd
/home/maker/docs/sensors

But what if you cd in your project directory and then need to change back into your docs directory? You have to type the whole path. Or do you?

Continue reading “Changing directories”