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Felix J. Ogris' private homepage: some stuff about homemade software, FreeBSD, Linux, computers, and hacking in general.

Somewhat more nosy? Mailto www@ogris.de.

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recent news

[2024-10-09] LogBlitz version 21 allows you to wrap lines even on Chrome and Chromium based webbrowsers, and restores the expected cookie behaviour.

[2024-10-03] LogBlitz version 20 allows you to wrap lines.

[2024-09-25] New version of my how to install pgAdmin 4 on FreeBSD 14 fixes two errors, and covers pgAdmin 8.12.

[2024-09-04] Updated how to install pgAdmin 4 on FreeBSD 14 to pgAdmin 8.11.

[2024-08-30] New version of rrd4cmk.pl provides default status texts, and allows you to specify a name, a minimum value, and a maximum value for the metrics.

[2024-08-21] rrd4cmk.pl is a local check for Checkmk that checks an RRD database for thresholds.

[2024-06-30] Random password generator with Python >= 3.6:

$ python -c 'import random, string; print("".join(random.choices(string.ascii_letters+string.digits+string.punctuation, k=16)))'

[2024-06-16] New version of kvmlib allows you to disable any sound hardware at all (set VM_SOUND to "0"), fixes a bug when accessing qemu's console without a parameter, allows you to create, resize, and list virtual disks, and may create, delete, rollback, and list snapshots of a vm's virtual disks.

[2024-04-16] 499.ipdb is a helper for geolocation access on your FreeBSD firewall. It atomically loads the ip ranges of given countries to an ipfw firewall table. You run 499.ipdb weekly by periodic and as cron job during system boot. It either requires sysutils/ipdbtools from ports to directly download and compile ip geolocation data from a regional Internet registry, or may download the output from a central host that also runs 499.ipdb regularly.

[2024-03-20] text2png.py outputs a given text as scrambled picture in png format.

[2024-03-13] graypold version 11 supports SQLite database backends. Please see the provided readme.txt. Also note that the config option for the graylisting unix socket has changed:
OLD: listen_graypol = /var/run/graypold_graypol.sock
NEW: listen_graylist = /var/run/graypold_graylist.sock

[2024-03-07] ovpn.py version 2 displays transferred bytes human readable with suffixed kB, MB, and so, and right-aligns integer values. Here's a screenshot:
Example output of ovpn.py .

[2024-03-03]

LogBlitz version 19 fixes a cookie issue when using user roles, and comes with optimised JavaScript code.
ovpn.py is a CGI/WSGI script which displays connected clients, routing table, and various info of locally running OpenVPN instances.

[2024-02-25]

Capture traffic remotely with tcpdump, display live with Wireshark:

$ ssh USER@REMOTEHOST 'tcpdump -i INTERFACE -U -s 0 -w -' | wireshark -i - -k

When you added yourself to a supplemental group on FreeBSD or Linux, call newgrp NEWGROUP to reload your group membership in your current session. As this changes the effective gid on FreeBSD or the primary group on Linux, newgrp is just a quick and temporary fix, while logout and fresh login are better suited in the long run.
On FreeBSD 14 you have to revise your VLAN config statements, e.g. in /etc/rc.conf. The VLAN ID has to be placed before the vlandev parameter:
```
# ifconfig vdsl vlan 7 vlandev igb0 up
```
On FreeBSD 13, the parameters could be given in any order, e.g.:
```
# ifconfig vdsl vlandev igb0 vlan 7 up
```
grapheqd version 8 uses OpenSSL version 3 and its EVP_* message digest functions.
LogBlitz version 18 allows you to refresh the current search result automatically every given seconds, thus making it the alter ego of tail -f.

[2024-02-24] Updating a FreeBSD system bumped to FreeBSD 14.

[2024-02-17] First rule of WSGI programming: You do not use global variables. Thus, LogBlitz version 17.

[2024-01-17] gitup is a lightweight alternative to the official git client. It is aimed at updating ports (and src) on a FreeBSD system without cloning the respective repository's database or history. Installation is pretty simple:

# pkg install gitup
# cp -aiv /usr/local/etc/gitup.conf.sample /usr/local/etc/gitup.conf

If you have already installed ports locally, then you might build gitup from source:

# make -C /usr/port/net/gitup install clean
# cp -aiv /usr/local/etc/gitup.conf.sample /usr/local/etc/gitup.conf

Keeping your ports copy up to date is trivial:

# gitup ports

gitup will not proceed if a .git directory exists. Thus, if you have cloned your copy of the ports tree using the official git client, then remove /usr/ports/.git first:

# rm -r /usr/ports/.git

[2024-01-08] LogBlitz version 16 can be served by a WSGI server, too.

[2023-12-20]

How to install pgAdmin 4 on FreeBSD 14.
Yet another new version of pocgi.py fixes an embarrassing bug where files containing two consecutive newlines were not handled correctly.

[2023-12-16] New version of pocgi.py fixes two bugs: Standard input was not opened in binary mode, and parsed values were not comparable to strings.

[2023-12-13] As FreeBSD 14 ships without portsnap, you are encouraged to use git in order to update your local ports tree. If you do not need the complete history of the entire ports collection, then limit the number of historical commits to one, e.g. for a very first clone right a fresh install:

# pkg install git
# git clone --depth 1 https://git.FreeBSD.org/ports.git /usr/ports

To keep the ports tree tidy afterwards, I use these 3 commands for now:

# cd /usr/ports
# git pull --depth 1
# git reset --hard origin
# git clean -dfx

[2023-12-08]

Improved version of formdata.py consists of one function only, which expects you to pass any form data as dictionary.
New version of pocgi.py fixes encoding issues.

[2023-12-03] pocgi.py (plain old cgi) aims to be a replacement for Python's cgi library, which was deprecated in 3.11 and will be removed in 3.13 (see PEP 594).

[2023-11-25] formdata.py shows how to do multipart/form-data HTTP POST uploads with Python's urllib only.

[2023-11-05] Benchmarked two additional devices for video encoding speed.

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