Adding proxy to MSYS2

If you ever need to use a proxy when updating / installing packages in msys2 you’ll have to set the following environnement variables, and put them i.e in your .bash_profile :

# .bash_profile example
# Note: username and password have to be url encoded in case they contain special chars
export http_proxy=http://USERNAME:PASSWORD@proxy:port
# or like this if not user/password required
# export http_proxy=http://proxy:port
export https_proxy=$http_proxy
export ftp_proxy=$http_proxy
export rsync_proxy=$http_proxy
# if you need a proxy ignore list
export no_proxy="localhost,,localaddr,.yourlocaldomain.ext,.local"


I’ve set up my last allegro 5 install + compilers in less than 15 minutes.

1) download and install msys2 ( )

Now launch the msys2 terminal and copy pasta the followings:

pacman -Syu
pacman -S --needed base-devel mingw-w64-i686-toolchain mingw-w64-x86_64-toolchain git subversion mercurial mingw-w64-i686-cmake mingw-w64-x86_64-cmake
pacman -Sy mingw32/mingw-w64-i686-allegro mingw64/mingw-w64-x86_64-allegro 
pacman -Sy mingw-w64-i686-dumb mingw-w64-i686-flac mingw-w64-i686-opusfile mingw-w64-i686-freetype mingw-w64-i686-libjpeg-turbo mingw-w64-i686-libpng mingw-w64-i686-libvorbis mingw-w64-i686-libwebp mingw-w64-i686-openal mingw-w64-i686-physfs
pacman -Sy mingw-w64-x86_64-dumb mingw-w64-x86_64-flac mingw-w64-x86_64-opusfile mingw-w64-x86_64-freetype mingw-w64-x86_64-libjpeg-turbo mingw-w64-x86_64-libpng mingw-w64-x86_64-libvorbis mingw-w64-x86_64-libwebp mingw-w64-x86_64-openal mingw-w64-x86_64-physfs

CYGWIN: list all process arguments

A few days ago I had to list the arguments for specific process.
While finding it using “ps -aef | grep ‘processname'” and getting the information is trivial under linux, it is not the case using cygwin, which is only reporting process name and pid when calling “ps”.

A lot of solutions involve installing cygwin packet, like pstree.

Another solution is to search the /proc/pid/cmdline files, like here:

grep -a /proc/*/cmdline | xargs -0
/proc/1990/cmdline:/bin/sh /usr/bin/startxwin
/proc/2016/cmdline:xinit /etc/X11/xinit/startxwinrc — /usr/bin/XWin :0 -multiwindow -auth /home/user/.serverauth.1990
/proc/2017/cmdline:/usr/bin/XWin :0 -multiwindow -auth /home/user/.serverauth.1990
/proc/2035/cmdline:dbus-launch –sh-syntax –exit-with-session
/proc/2036/cmdline:/usr/bin/dbus-daemon –fork –print-pid 5 –print-address 7 –session
/proc/3441/cmdline:grep –color -a /proc/1990/cmdline /proc/2016/cmdline /proc/2017/cmdline /proc/2023/cmdline /proc/2035/cmdline /proc/2036/cmdline /proc/2046/cmdline /proc/2512/cmdline /proc/2513/cmdline /proc/3441/cmdline /proc/self/cmdline
/proc/self/cmdline:grep –color -a /proc/1990/cmdline /proc/2016/cmdline /proc/2017/cmdline /proc/2023/cmdline /proc/2035/cmdline /proc/2036/cmdline /proc/2046/cmdline /proc/2512/cmdline /proc/2513/cmdline /proc/3441/cmdline /proc/self/cmdline

To restrain it to a particular process i.e XWin, excluding grep command:

grep -a “XWin” /proc/*/cmdline |xargs -0 |grep -v grep
/proc/2016/cmdline:xinit /etc/X11/xinit/startxwinrc — /usr/bin/XWin :0 -multiwindow -auth /home/user/.serverauth.1990
/proc/2017/cmdline:/usr/bin/XWin :0 -multiwindow -auth /home/user/.serverauth.1990

Nilorea Library is part of GitHub Arctic Code Vault

Just wanted to say that my own public repo for NiloreaLibrary is part of the vault, and a copy of it is in the archive located in a decommissioned coal mine in the Svalbard archipelago, closer to the North Pole than the Arctic Circle. GitHub captured a snapshot of every active public repository on 02/02/2020 and preserved that data in the Arctic Code Vault.

More infos:

Did Shnorr broke RSA ?

A recently published paper by a reputable German mathematician and cryptographer has garnered widespread attention for its claim to have destroyed the RSA algorithm. However, many people are skeptical. Join us as we discuss the paper’s content, the proposed methodology, and the public discussion it has generated.