I share a ADSL modem via a Wifi router with several roommates. Sometimes, I find the network bandwidth left is too little. Suspiciously, some one is using BT, Thunder, eMule or other P2P tools. These tools can easily use up all the bandwidth and left little for others. How to prevent some roommates from hogging
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Category: Tutorial
How to concatenate multiple video file together on Linux
Posted onI have multiple video files, say video1.avi, video2.avi and video3.avi. How to concatenate these multiple video file to a single file together on Linux? You can use mencoder to concatenate multiple video files to one file. For installing mencoder on Fedora, please check: http://www.systutorials.com/1493/mplayer-on-fedora/ For the question, the command is: mencoder -oac copy -ovc copy
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How to get a Makefile’s directory for including other Makefiles
Posted onI experience this problem: I have a file common.mk that includes release.mk which in the same directory. common.mk is included by the top-level Makefile. common.mk and release.mk are shared by multiple projects and the top-level Makefile may stay in different directories with {common,release}.mk. Now, include in make use the pwd as base directory. So, simply
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Add via to the Tweet button of AddThis share
Posted onI use the AddThis share buttons on my sites. How to add the via @fclosedotcom to the Tweet button of AddThis share so that the tweets automatically @ my twitter handle? Change <a class=”addthis_button_tweet”></a> to <a class=”addthis_button_tweet” tw_via=”fclosedotcom”></a> Try it on this page with the Tweet button.
How to find files in a directory that are larger than certain size?
Posted onI have many files under a directory. How to find those files under the directory that are larger than certain size, say 500MB? Find the files that are larger than 500MB in the current directory (./): find ./ -size +500M Prints our more information about these files: find ./ -size +500M -exec ls -lh {}
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How to find top K largest files in a directory on Linux?
Posted onI have many files in a directory on Linux. How to find top K largest files in a directory? For example, find top 10 (K=10) large files in the current directory: du -h –max-depth 1 * | sort -rh | head -n 10
How to find broken soft links in a directory?
Posted onHow to find broken symbolic links in a directory which have many symbolic links? Use this command to find broken soft links: find -xtype l /path/to/dir/to/find/in/ You can also specify the action by -exec. For example, delete the soft links that are broken in the current directory: find -xtype l -exec rm -f {} ;
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How to change the fonts used in Gnome 3?
Posted onHow to change the fonts used in Gnome 3? The default configuration tool of gnome does not provide an option to change the fonts. However, the gnome-tweak-tool provides it. If you have not installed it, you need to install it first. On Fedora, run # yum install gnome-tweak-tool. Then you can run gnome-tweak-tool and set
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How to change the fonts of gnome-shell for gnome3?
Posted onHow to change the fonts of gnome-shell for gnome3? Like the system bar. The fonts of gnome-shell is described in its own theme. For the default gnome-shell, you need to edit the file as root: /usr/share/gnome-shell/theme/gnome-shell.css Right, it is a css file. Find the font-family keyword and change the corresponding fonts. Then you can restart
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Random string password generator in Scala
Posted onManaging our research cluster, I frequently need to generate some string for new users’ password. How to generate them automatically and randomly in Scala? The passwords need characters ‘a’ – ‘z’, ‘A’ – ‘Z’ and ‘0’ – ‘9’ only. This piece of code works very well for me: def randomString(len: Int): String = { val
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How to change my Linux password
Posted onHow to change my password on a Linux box? The original password is generated by the administrator for me. User the passwd command. The easiest way: Log in the Linux box with your account Run passwd and it will ask your old and new passwords.
Domain registration coupons
Posted onThis page lists some domain registration coupons that users can use. The best that I can find currently the the $2.95 .com domain from godaddy: If you want to buy hosting from Godaddy at the same time, you can check this one which provides a free domain:
Syntactical difference among OCaml, Scala, F# and Haskell
Posted onWhat’s the syntactical difference among OCaml, Scala, F# and Haskell. This page gives a side-by-side reference among OCaml, F#, Scala and Haskell: ML Dialects and Friends: OCaml, F#, Scala, Haskell
How to write paper reviews?
Posted onSometimes, we need to write paper reviews after read many papers which belong to a specific area (like information retrieval). I have found some useful links which are as follows. http://www.uwlax.edu/biology/communication/ReviewPapers.htmlhttps://users.ece.utexas.edu/~miryung/teaching/EE382V-Fall2009/review.html
Other Mobile Messengers Like WhatsApp
Posted onWhat other mobile messengers like WhatsApp in the market? Messneger Apps focusing on mobile phones WhatsApp: http://www.whatsapp.com/ WeChat: http://www.wechat.com/en/ Kik: http://kik.com/ Kakao Talk: http://www.kakao.com/talk/en LINE: http://line.me/en/ Other “general” messengers that also have mobile clients Google Hangouts: http://www.google.com/ /learnmore/hangouts/ Facebook Messenger: https://www.facebook.com/mobile/messenger Skype: http://www.skype.com/en/download-skype/skype-for-mobile/
Should I buy a Kindle paperwhite or regular Kindle?
Posted onShould I buy a Kindle paperwhite or regular Kindle? Actually, you can click the following link to get the answers :-)http://www.reddit.com/r/kindle/comments/16in81/should_i_get_a_paperwhite_or_regular_kindle/
How to allow contributors to Upload Files in wordpress
Posted onHow to allow contributors to Upload Files in wordpress? I allow my wordpress site’s contributors to submit posts. But by default, WordPress contributors do not have the capability to upload files. How to allow them to upload files? The key to my solution to add the upload files capability to contributors in WordPress is the
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How to convert A4 paper format to read on Kindle 5
Posted onKindle is good for reading. However, the A4-size technical/academic paper is pain to read on Kindle 5—the fonts are too small. The “email to Kindl” converting tool provided by Amazon usually loses the formats in the technical paper. How to convert A4 paper format to read on Kindle 5? I use k2pdfopt tool (hey, source
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How to make eps files using gnuplot
Posted onHow to make gnuplot generate eps files instead of plot the figures on screen? First, save a Gnuplot plot as a PostScript file by this commands: # gnuplot> load ‘saveplot’ # gnuplot> !mv my-plot.ps another-file.ps The saveplot file’s content: set size 1.0, 0.6 set terminal postscript portrait enhanced mono dashed lw 1 “Helvetica” 14 set
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How to convert a .docx .doc MS Word file to pdf in command line on Linux
Posted onHow to convert a MS Word document file such as .docx and .doc to pdf on Linux using command line tools? Use LibreOffice: libreoffice –headless –convert-to pdf –outdir /path/to/out/dir/ /path/to/doc/docx/file While this LibreOffice answer works, the –headless option still needs as display, even though it does not use it. In otherwords, this option won’t work
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