Loading...

Blog

A Journey of a Thousand Miles Begins with a Single Step

Show process tree of a dedicated process

I always wonder if I could display the a certain process with pstree and not the whole process tree itself. It is possible. See below the results after reading the man page and trying out the options.

Read more

Admonitions in Asciidoctor

Admonitions in Asciidoctor are primarily related to docbook. Following admonitions are built in.

Read more

Purge old packages from Linux

For deb based distributions like Debian, Ubuntu, it is advisable to purge old packages (have status rc, r=removed, c=config).

Read more

Backup Kibana

Kibana is the visual web interface for elasticsearch. You can create searches, visualisations and dashboards. Sometimes you spend a lot of valuable work into them. Therefore is essential to have some kind of backup for Kibana. The Kibana data itself, is stored in Elasticsearch in the .kibana index. One way is to use the snapshot and restore capability of Elasticsearch.

Read more

Delete all tables for Oracle DB

To purge all data from a user schema, I simply generate a drop table statement for each user table.

Read more

ORA-01830 - National Language Support between Germany and Switzerland

I have to deal with a German software vendor, which gives us some SQLs scripts for Oracle DB. Between Germany and Switzerland, there are minor differences, which led to error ORA-01830. The script contained some insert statements with timestamps.

Read more

Log output of a specific Class to a specific Appender with log4j

An Java application uses log4j. Since I use logback all the time, it was quite a challenge to look up the docs for log4j 1.2.17. This application also writes statistical logs. To separate the statistic, we can use a different appender in log4j. The crucial point is to set the additivity to false, so the log won’t be logged twice in the root logger.

Read more

grsync

I needed to backup my data, rsync is the right tool for that. But since it has so many options, I look out for a graphical user interface, that could set up my settings. I found it at grsync.

Read more

My new Micro Barebone Intel NUC 6I5SYH

I am more than satisfied with my Macbook Pro, but I am still quite fond of working with Linux. I saw a cheap opportunity, and assembled a nice micro barebone. Runs perfectly. The Intel NUC need only RAM and disk storage. I chose the NUC6I5SYH, thus it offers me to use a fast NAND storage for the OS (M.2 22x80) and a 1 TB Fusion drive for storage.

Read more