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Welcome to the PaskvilWiki!

The future shape of this wiki is unknown for now, let's hope it'll be something good...

This is partially a private wiki - viewing is allowed to all, but editing is allowed only to registered users.

This is more of a prevention than denial - I don't have time to monitor and moderate edits; - you're more than welcome to request registration, all contributors are very much welcome!

Just write me at


Simple Guide to SVN Client

Bullets on how to use SVN client.

Creating a SVN Repository

How to create a new SVN repository to serve using svnserve, via svn+ssh or via Apache.

Moving a SVN Repository

Moving complete SVN repository from one host to another.

Setup a SVN Server on a Shared Hosting

How to setup SVN hosting (via svn+ssh) if you're on a shared hosting client - no root access.

References and Tutorials

Emacs and Slime Reference

Small jQuery Reference

Small jQuery Cheat Sheet

Small SPARQL, RDQL, etc. Cheat Sheet

Small 4store How-To

  • setup and installation
  • running 4store
  • data import
  • data import and querying from Python
  • Turtle file printer (in Python)

Small Kyoto Cabinet and Kyoto Tycoon Notes

  • setup and install Kyoto Cabinet
  • setup and install Kyoto Tycoon
  • KT's RPC API Reference

Small elasticsearch Notes

  • Installation
  • What You Get
  • Indexing, Routing, etc.
  • Deleting
  • Getting and Multi-Getting
  • Updating
  • Search

Small MongoDB Notes

Esp. using the PHP PECL driver.

Short Notes - Tips and Tricks


  • Note on serving of local files
  • Self-Signed SSL Certificate
  • Enable SSL/HTTPS in Apache
  • .htaccess and mod_rewrite Tricks


  • Extensions and File Name
  • File Test Operators
  • Commands and Shortcuts
$ sudo !!                         - run last command as root
$ !!:gs/foo/bar                   - run last command, replacing 'foo' with 'bar'
$ ^foo^bar                        - run last command, replacing 'foo' with 'bar'
$ cp filename{,.bak}              - create a .bak copy of file
<Ctrl-x> <Ctrl-e>                 - open $EDITOR to edit current command line; upon exit, content will be run
$ <space>command                  - run the command without saving it in history
$ > file.txt                      - empty a file
<Alt+.>                           - put last argument on cursor place; repeat to cycle through
$ (cd /tmp && ls)                 - jump to /tmp, execute ls, and jump back here
$ pushd /tmp .... $ popd          - goes to /tmp, remembering current location; at later time, popd will bring you back
$ \command                        - run command without using aliases
$ rm !(pattern|pattern)           - delete files that do not match given patterns
$ find . -mtime +5 -exec rm {} \; - delete all files in this folder that are older than 5 days
<Ctrl-u> ... <Ctrl-y>             - Ctrl+u will cut current command, then you can do whatever you need, and Ctrl+y will paste it back
$ date -d @1234567890             - convert unix timestamp to human-readable
  • Informations
$ mount | column -t               - pretty-print mount table
$ cat /etc/issue                  - display distro name
  • Small Tricks
$ mount -t tmpfs tmpfs /mnt -o size=1024m      - mount temporary RAM partition (fast access, non-persistent!)
$ disown -a && exit               - exit the shell while keeping all running processes alive
$ ssh -t remote_host screen -r    - directly connect to a remote screen process
$ for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
                                  - backup all databases into individual files
$ fuser -k filename               - kill process that is locking given file
$ readom dev=/dev/scd0 f=/path/to/image.iso    - create CD/DVD ISO image
$ mkdir -p a/deep/dir/tree        - create nested directories fast
$ mount file.iso /mnt/iso -o loop - mount ISO file as drive /mnt/iso (dir has to preexist)
$ sudo touch /forcefsck           - force a file system check on the next reboot
  • lsof
$ lsof -nPi                       - list network connections
$ netstat -tlnp                   - print all listening ports with PID's (run as root to see all process names)
$ lsof -c gnome-terminal          - list files opened by given command
$ lsof +D [folder]                - discover all open files in the [folder]
$ lsof -p [pid]                   - list files opened by given PID
$ lsof -i :8080                   - list programs that have port 8080 open ("who to kill" if you get "port already in use")


  • How to clean up after child thread
  • Non-blocking IO using sockets
  • Shared Libraries on Linux+GCC
  • Singleton
  • std::move Semantics


  • Rip DVD into FLV (or anything else)
  • Video File with Still Image and Audio

Linux Administration

  • Reset Compiz to Default Settings
  • Enable and Start sendmail
  • Installing sendmail
  • Sending Emails using sendmail


  • Asynchronous Execution
    • NSThread
    • performSelectorInBackground
    • dispatch_async
  • MacPorts
$ sudo port selfupdate
$ sudo port upgrade outdated
$ sudo port uninstall inactive
$ (just once) sudo port install port_cutleaves
$ sudo port_cutleaves


  • Merging PDF Files using GhostScript
  • Cutting PDF Files using GhostScript
  • Converting to PDF using GhostScript


  • Convert Accented Characters to Non-Accented
  • Upload a File using cURL
  • HTTP Post in Pure PHP (without cURL)
  • Prevent Client Disconnect from Killing PHP
  • Disconnect Client and Continue Processing


  • Timing, and memory, on Linux


  • Password Generators
  • SSH Access using pubkey's Authentication
  • Using RSync together with SSH


  • Delete all lines matching a pattern
  • Directly type HTML entities
  • Reformat a plain text paragraph
$ vim -x filename                      - open filename for editing, and save it encrypted (will prompt for a key)
:X                                     - set encryption for current file; use ':set key=' to disable encryption
                                       - put "set cm=blowfish" in your .vimrc to enable safer encryption by default
$ vim +10 [file] ; vim +/hello [file]  - open [file] at line 10, or at first occurrence of pattern 'hello' in file
:w !sudo tee %                         - save file via `sudo` (as root)

Web - HTML, CSS, JS, jQuery, etc.

  • Multiple Submit Buttons and/or Multiple Forms on Page
  • Make 'float' Elements Appear One under Another
  • Upload a File via Form
  • Override the IE's Problem with width
  • Make an Element Fill In All the Remaining Space

Other Short Notes

Rip Video DVD that is not Finalized

Install Apache and PHP to do Secure h264 Pseudo Streaming