Author Archives: Masao

PHP: Get URL Content Using PHP Curl

Posted on November 30, 2011 by Masao 

/* gets the data from a URL */ function get_data($url) { $ch = curl_init(); $timeout = 5; curl_setopt($ch,CURLOPT_URL,$url); curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout); $data = curl_exec($ch); curl_close($ch); return $data; } Source: http://davidwalsh.name/download-urls-content-php-curl

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Netgear: Using WNDR3700 as Wireless Access Point

Posted on November 16, 2011 by Masao 

Basic Configuration WNDR3700 needs to be configured using its installation CD After it is set to factory default, its default IP is 192.168.1.1 Access Point Setup Plug your Internet connection into the WAN port (yellow) on the WNDR3700 Power cycle … Continue reading →

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Mac: How To Shutdown Using Command Line

Posted on October 8, 2011 by Masao 

Crontab (shutdown every morning at 3am): 0 3 * * * /sbin/shutdown -h now

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Linux: Send Process To Background And Logout

Posted on September 30, 2011 by Masao 

While process is running, press CTRL-z, then… $ bg (the output may come to foreground again, but you can logout now and the process will continue running in the background)

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Xbox: Westinghouse LCD TV and Xbox 360 Universal Remote

Posted on September 30, 2011 by Masao 

Use Sony Xbox Remote Codes: 0123 Also, if PC input sound fails, toggle the mute on the LCD TV.

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Linux: Using Daemonize To Run User Processes In The Background

Posted on September 29, 2011 by Masao 

You must use full paths to all arguments for daemonize. As of now, daemonize must be downloaded and compiled, it does not exist in APT. $ daemonize /usr/full/path/to/node /home/full/path/to/app.js

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Subversion: svn undo delete before commit

Posted on September 22, 2011 by Masao 

svn revert file [file] [file] …

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Linux: How To Fix “node js openssh not found”

Posted on September 22, 2011 by Masao 

apt-get install -y pkg-config

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Linux: How To Find Disk IO Usage Per Process

Posted on September 21, 2011 by Masao 

Sendmail sometimes uses a lot of disk IO by kicking off this process: 215 root 20 0 0 0 0 D 1 0.0 187:49.63 [jbd2/dm-0-8] Tools you can try using: iostat iotop Before: # iostat 1 avg-cpu: %user %nice %system … Continue reading →

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Wireshark: Common Filters

Posted on September 21, 2011 by Masao 

DISPLAY FILTER EXPLANATION EXAMPLE eth.addr source or destination mac-address eth.addr == 00:1a:6b:ce:fc:bb eth.src source mac-address eth.src == 00:1a:6b:ce:fc:bb eth.dst destination mac-address eth.dst == 00:1a:6b:ce:fc:bb arp.dst.hw_mac target mac-address arp.dst.hw_mac == 00:1a:6b:ce:fc:bb arp.dst.proto_ipv4 target IPv4 address arp.dst.proto_ipv4 == 10.10.10.10 arp.src.hw_mac sender mac-address … Continue reading →

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Linux: How To Play AVI Files

Posted on September 19, 2011 by Masao 

APT packages needed to play FFmpeg .avi files: p gstreamer0.10-ffmpeg – FFmpeg plugin for GStreamer p gstreamer0.10-plugins-bad – GStreamer plugins from the “bad” set

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VIM: Swap Left Hand Directional Keys With Right Hand Command Keys

Posted on September 16, 2011 by Masao 

Reduce usage in your right hand using these mappings. – Mirror up and down keys – Shift left and right keys to the left hand – ‘s’ (change one character and insert) becomes ‘h’ – ‘d’ (‘dd’ deletes a line) … Continue reading →

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Apache: Redirect All Queries From HTTP to HTTPS

Posted on September 15, 2011 by Masao 

RedirectMatch (.*) https://host.example.com$1

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Ubuntu: CMake “RPM package requires rpmbuild executable”

Posted on September 15, 2011 by Masao 

apt-get install -y rpm

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Linux: Backup Entire Directories With Revision Control Using Subversion SVN

Posted on September 10, 2011 by Masao 

General steps (for example, the /etc directory) Install Ubuntu Server Log in and sudo bash. Import the /etc directory into your SVN repository. Check out the new directory and call it “/etc.new” Move out the old directory: “mv /etc /etc.old” … Continue reading →

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Linux: MySQL Set Root Password

Posted on September 10, 2011 by Masao 

For Windows, do this: shell> mysql -u root mysql> SET PASSWORD FOR ‘root’@'localhost’ = PASSWORD(‘newpwd’); mysql> SET PASSWORD FOR ‘root’@’127.0.0.1′ = PASSWORD(‘newpwd’); mysql> SET PASSWORD FOR ‘root’@'%’ = PASSWORD(‘newpwd’); The last statement is unnecessary if the mysql.user table has no … Continue reading →

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Linux: Subversion SVN+SSH Import New Project

Posted on September 9, 2011 by Masao 

svn import myfolder svn+ssh://kitamura@svn2.cs.lmu.edu/svn/myfolder \ -m “my comment”

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nTop: How To Fix RD: Disabled – unable to create base directory

Posted on September 1, 2011 by Masao 

1. faster one sudo chown -R nobody:nogroup /var/lib/ntop 2. slower but nicer sudo chmod 755 /var/lib/ntop sudo mkdir /var/lib/ntop/rrd sudo chown -R nobody:nogroup /var/lib/ntop/rrd and then you can run sudo ntop & and connect to it on http://localhost:3000 Source: Ubuntuforums.org

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Subversion: How To Fix “format: permission denied”

Posted on August 31, 2011 by Masao 

# chmod 775 /abspath/to/svnroot

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Ubuntu Linux: Flush, Clear, Renew DHCP Cache

Posted on August 21, 2011 by Masao 

When all else fails on the client… # apt-get install -y dhcpcd # dhcpcd eth0 # dhcpcd.sh: interface eth0 has been configured with new IP=XXX.XXX.XXX.XXX If it still fails, restart the DHCP server… # /etc/init.d/dhcp3-server restart Other things to try … Continue reading →

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