Thursday, June 5, 2014
Resize many gif images using imagemagick
for i in *.gif; do convert $\$$i -resize 400x400 $\$$(basename $\$$i .gif).gif; done
Show status of dd command
Run dd with something like
sudo dd if=/dev/zero of=/dev/sdx
Now in another terminal, do ps ax| grep dd
Look at the process id (first column) of the dd command
Use that process id as input for
sudo kill -SIGUSR1 <pid>
This will force dd to print a status update
http://serverfault.com/questions/4906/using-dd-for-disk-cloning
sudo dd if=/dev/zero of=/dev/sdx
Now in another terminal, do ps ax| grep dd
Look at the process id (first column) of the dd command
Use that process id as input for
sudo kill -SIGUSR1 <pid>
This will force dd to print a status update
http://serverfault.com/questions/4906/using-dd-for-disk-cloning
PXE boot args for disabling nouveau
Doing lsmod | grep nouveau showed nouveau drivers being loaded, even though I had the following PXE boot args
append initrd=myrd.gz root=/dev/ram0 rdblacklist=nouveau nouveau.modeset=0 init=/bin/init ramdisk_size=800000 ramdisk_blocksize=1024 rw
Noveau was still loading, but adding nouveau.blacklist=1 solved it, like so:
append initrd=myrd.gz root=/dev/ram0 nouveau.blacklist=1 rdblacklist=nouveau nouveau.modeset=0 init=/bin/init ramdisk_size=800000 ramdisk_blocksize=1024 rw
There is also a nouveau.disable=1 option, which I did not try
http://fedora.12.x6.nabble.com/Problems-removing-nouveau-in-fed-18-td4993336.html
append initrd=myrd.gz root=/dev/ram0 rdblacklist=nouveau nouveau.modeset=0 init=/bin/init ramdisk_size=800000 ramdisk_blocksize=1024 rw
Noveau was still loading, but adding nouveau.blacklist=1 solved it, like so:
append initrd=myrd.gz root=/dev/ram0 nouveau.blacklist=1 rdblacklist=nouveau nouveau.modeset=0 init=/bin/init ramdisk_size=800000 ramdisk_blocksize=1024 rw
There is also a nouveau.disable=1 option, which I did not try
http://fedora.12.x6.nabble.com/Problems-removing-nouveau-in-fed-18-td4993336.html
Make a bootable USB
Copy the .iso file to /dev/sdx (NOT /dev/sdx1)
dd bs=4M if=/path/to/iso of=/dev/sdx
When finished, make sure to zero out the boot record and non-standard partition table:
dd count=1 bs=512 if=/dev/zero of=/dev/sdx
https://wiki.archlinux.org/index.php/USB_Installation_Media
dd bs=4M if=/path/to/iso of=/dev/sdx
When finished, make sure to zero out the boot record and non-standard partition table:
dd count=1 bs=512 if=/dev/zero of=/dev/sdx
https://wiki.archlinux.org/index.php/USB_Installation_Media
Making a pdf from an IPython notebook
With the latest ipython one can run ipython nbconvert latex mynotebook.ipynb. The latest ipython can currently be installed from https://github.com/ipython/ipython, at the time of this writing this is the 1.0 development stream.
ipython nbconvert latex mynotebook.ipynb will result in a latex file. texi2pdf should then be able to convert this tex file into a viewable pdf - in my case I had to manually copy all the files and images out of the associated mynotebook_files directory to the same directory as the .tex file, both of which were generated by ipython nbconvert. If you encounter latex errors, see http://www.tug.org/texlive/acquire-netinstall.html for installation instructions for the latest latex. The default Ubuntu texlive package (as of 13.04 at least) is not recent enough to perform the conversion!
ipython nbconvert latex mynotebook.ipynb will result in a latex file. texi2pdf should then be able to convert this tex file into a viewable pdf - in my case I had to manually copy all the files and images out of the associated mynotebook_files directory to the same directory as the .tex file, both of which were generated by ipython nbconvert. If you encounter latex errors, see http://www.tug.org/texlive/acquire-netinstall.html for installation instructions for the latest latex. The default Ubuntu texlive package (as of 13.04 at least) is not recent enough to perform the conversion!
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