ObiWahn

Unix signals in Qt applications

It's quite easy to catch unix signals in Qt applications. you may like to ignore or accept them.

#include <QCoreApplication>

#include <initializer_list>
#include <signal.h>
#include <unistd.h>

ObiWahn

How to enable the MySQL/MariaDB general query logs

1. Enter to MySQL/MariaDB server command-line tool (change root with your username and password):

mysql -u root -proot

2. Set the general log file path:

SET GLOBAL general_log_file='/var/log/mysql/mycustom.log';

ObiWahn

" Configuration file for vim
" vim:expandtab:foldmethod=marker:foldlevel=0:tw=0

" fix ui language
set langmenu=en_US.UTF-8

" Source a global configuration file if available
if filereadable("/etc/vim/vimrc.local")

ObiWahn

source

qemu on Debian 9 has some issues showing the curses console when running a Debian 9 guest. To fix this the guest's grub needs to supply some extra parameters to the kernel and disable a module:

• on the guest system open /etc/default/grub and add console=tty0 console=ttyS0 to GRUB_CMDLINE_LINUX this tells the linux kernel to use tty0 as console
  • note: see info -f grub -n 'Simple configuration' for difference between GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT
• create (or change the file) /etc/modprobe.d/bochs_drm.conf so that its contents is the following line: install bochs_drm /bin/true
  • note: this configures modorobe to run /bin/true instead of loading bochs_drm, which disables the loading of

• note: install is a modprobe command (not the shell command!), whereas /bin/true is a shell command.

ObiWahn

create and register git template directory

> mkdir -p ~/.git-templates/hooks
> git config --global init.templatedir '~/.git-templates'

add some example pre-push hook

ObiWahn

[alias]
     #https://github.com/seveas/git-spindle
 
     ##basic
     treeall = "log --graph --pretty=oneline --decorate --abbrev-commit --all"
     tree = "log --graph --pretty=oneline --decorate --abbrev-commit"
     treelong = "log --graph --pretty='%C(yellow)%h %d %Cblue%ad %Cgreen%an %Creset%s ' --date=relative"
     logall  = "log --all --date-order"
     stat = "diff --stat HEAD"
     cat = "cat-file -p"