Apache - Force caching dynamic PHP content with mod_headers

Normally you want dynamic content to be fresh and not catchable. But sometimes it may be useful to cache it, like when you have website behind reverse proxy. To do this try something like this: <filesmatch "\.(php|cgi|pl)$"> Header unset Pragma Header unset Expires Header set Cache-Control "max-age=3600, public" </filesmatch> Sources http://www.askapache.com/htaccess/speed-up-your-site-with-caching-and-cache-control.html  external link

2015-12-29 · 1 min · timor

MySQL - reset root password

It will happen from time to time, that you’re on alien machine and have to brutally update things in db without knowing credentials. Example is for root (quite secure candidate to change because it shouldn’t be used in app 😃 ) but will work for any user. shutdown db service mysql stop create text file with command like this (update user accordingly) ex. in /tmp/pwchange.txt SET PASSWORD FOR "root"@"localhost" = PASSWORD("HereYourNewPassword"); start mysqld with --init-file param mysqld_safe --init-file=/tmp/pwchange.txt sometimes you may require to point configuration file ex. --defaults-file=/etc/mysql/my.cnf ...

2015-12-28 · 1 min · timor

Rotate movies

I hate movies recorded on phone in vertical position. This just short tip how I dealt with with it last time: for m in *.mp4 do avconv -i $m -vf "transpose=1" -codec:a copy -codec:v libx264 -preset slow -crf 23 rotated-$m done Other examples: http://stackoverflow.com/questions/3937387/rotating-videos-with-ffmpeg  external link http://superuser.com/questions/578321/how-to-flip-a-video-180  external link °-vertical-upside-down-with-ffmpeg ...

2015-12-28 · 1 min · timor

Extract password saved in Remmina

I had some passwords saved in remmina but like it always happen, I wasn’t been able to remember them when needed. Trying to restore them I found that they’re encrypted in .remmina directory. Then I used this script to decrypt them 1: Extract script import base64 from Crypto.Cipher import DES3 secret = base64.decodestring("<STRING FROM remmina.prefs>") password = base64.decodestring("<STRING FROM XXXXXXX.remmina>") print DES3.new(secret[:24], DES3.MODE_CBC, secret[24:]).decrypt(password) http://askubuntu.com/questions/290824/how-to-extract-saved-password-from-remmina  external link  ↩︎ ...

2015-12-25 · 1 min · timor

I’m back

After long break I’m thinking about writing more on my blog. I was reviewing my favorites/bookmarks and half of them was broken, so I can’t rely on them in case of knowledge management. I think I will write shorter, less descriptive articles just to be pointers to useful solutions from past.

2015-12-25 · 1 min · timor

Apache AuthBasic but excluding IP

Allow from IP without password prompt, and also allow from any address with password prompt Order deny,allow Deny from all AuthName "htaccess password prompt" AuthUserFile /web/askapache.com/.htpasswd AuthType Basic Require valid-user Allow from 172.17.10.1 Satisfy Any Sources http://www.askapache.com/htaccess/apache-authentication-in-htaccess.html  external link

2015-12-23 · 1 min · timor

Splątana sieć

Splątana siećPrzewodnik po bezpieczeństwie nowoczesnych aplikacji WWW Author: Michał Zalewski helion.pl

2015-12-10 · 1 min · timor

Ruby

RubyProgramowanie Authors: David Flanagan, Yukihiro Matsumoto helion.pl

2015-08-13 · 1 min · timor

GIT

GITRozproszony system kontroli wersji Author: Włodzimierz Gajda helion.pl

2015-02-10 · 1 min · timor

Copy GTP partiotion table between disks

When configuring RAID it’s quite important to have the same partition tables on every disk. I’v done this many times on msdos partition tables like this: sfdisk -d /dev/sda | sfdisk /dev/sdb but it’s not working any more on GPT partition tables. Hopefully it still can be done but with different toolstack 😄 Install gdisk: apt-get install -y gdisk Then use sgdisk like this: sgdisk -R /dev/sd_dest /dev/sd_src sgdisk -G /dev/sd_dest First command will copy partition from /dev/sd_src to /dev/sd_dest. Second will randomize partition UUID’s - needed only if you want to use disks in same machine (this is my case). ...

2014-07-28 · 1 min · timor