Category Archives: Linux

SCALE 15x

Posted on March 2, 2017 by

Went to the SoCal Linux Expo today.  First time attending and it was pretty neat.  I went to the Reactor8 guys talks/workshop.  Didn’t know anything they were talking about at first but eventually got an idea of their talks.  Beginning … Continue reading →

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Deleting messages in mailq

Posted on October 15, 2014 by

Had all these messages stuck in the mailq and couldn’t figure out how to delete the queued messages.  Turns out they were in these locations: /var/spool/postfix/deferred /var/spool/postfix/defer   Ubuntu Postfix

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Apache paths (default)

Posted on August 12, 2014 by

Had to look this up multiple times now: access log (sudo): /var/log/apache2/access.log apache2.conf: /etc/apache2/apache2.conf props if figured out what I’m doing

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Linux: upstart job

Posted on February 10, 2014 by

Made a newbie mistake on my aws server.  Started a node.js server as a user (node server.js &) and didn’t realize that after I logged out the node.js server would go down with it.  Once I set the node.js to … Continue reading →

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Install Node.js MongoDB on Ubuntu

Posted on February 7, 2014 by

For Ubuntu 12.04 Node.js (v 0.6.12) sudo apt-get install nodejs MongoDB sudo apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv 7F0CEB10 echo ‘deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen’ | sudo tee /etc/apt/sources.list.d/mongodb.list sudo apt-get update sudo apt-get install mongodb-10gen Reference: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/

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Cross Compile libcurl

Posted on October 17, 2013 by

Here are the command I used to cross compile libcurl for ARM processor. I’m assuming you’ve got your cross compile in the PATH already:   ./configure –target=arm-linux –host=arm-linux –prefix=/opt/libcurl No SSH support

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Android AVD emulator not starting on Ubuntu

Posted on May 9, 2013 by

Ran into this error where the Android Emulator API 8 or 10 on Ubuntu 12.04 would not start. It just looks like it’s hanging there. The solution is this: in android-sdk you need to rename the libOpenglRender.so library. cd /path/to/android-sdk-linux/tools/lib … Continue reading →

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GStreamer: HelloWorld example tip

Posted on March 7, 2013 by

Cross compiling the gstreamer HelloWorld example for my ARM J5 board, I ran into this warning and the associated error messages. /development/toolchains/arm-2009q1/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/../../../../arm-none-linux-gnueabi/bin/ld: warning: libz.so.1, needed by /development/ti-ezsdk_dm814x-evm_5_04_00_11/linux-devkit/arm-none-linux-gnueabi/usr/lib/libgstreamer-0.10.so, not found (try using -rpath or -rpath-link) /development/ti-ezsdk_dm814x-evm_5_04_00_11/linux-devkit/arm-none-linux-gnueabi/usr/lib/libxml2.so: undefined reference to `inflateEnd’ /development/ti-ezsdk_dm814x-evm_5_04_00_11/linux-devkit/arm-none-linux-gnueabi/usr/lib/libxml2.so: … Continue reading →

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PulseAudio: pacmd volume commands

Posted on March 6, 2013 by

On the TM 814x EVM board (kernel 2.6.37), the TI linux didn’t include the pacmd  To get the CLI pacmd, I needed to install the following packages: opkg install pulseaudio-misc pulseaudio-module-cli pulseaudio-module-cli-protocol-unix Maybe some other pacakges too but I forgot. … Continue reading →

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GDB: Remote target error

Posted on February 26, 2013 by

I was trying to debug a program on an ARM target and the debugger kept giving me this problem: gdb malformed packet Looking online, this error occurs because of a mismatch between the gdb on the host and the gdbserver … Continue reading →

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