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evanphx / gist:358c1627b69f7a33fca6
Created October 29, 2014 16:54
Tachyon installer with hash verification
curl http://tachyon.vektra.io/install.sh > it.sh && test $(openssl sha1 < it.sh) = "23fb0450b152dfaa8331dd37c3a4c13d4de9dbb8" && bash it.sh
@evanphx
evanphx / enable_zram.sh
Created October 15, 2014 23:26
Enable zram
modprobe zram num_devices=1
totalmem=`free | grep -e "^Mem:" | sed -e 's/^Mem: *//' -e 's/ *.*//'`
mem=$(((totalmem / 2) * 1024))
echo $mem > /sys/block/zram0/disksize
mkswap /dev/zram0
swapon -p 5 /dev/zram0
@evanphx
evanphx / eat_rando.rb
Created October 15, 2014 23:25
Eat memory filled with random data
mem = 1024 * 1024
ary = []
i = 0
seed = (0..mem).map { rand(255) }.pack("C*")
loop {
p i
x = seed.dup
@evanphx
evanphx / enable_zram.sh
Last active August 29, 2015 14:07
Enable zram swap with 512Mb
modprobe zram
echo 512M > /sys/block/zram0/disksize
mkswap /dev/zram0
swapon /dev/zram0
@evanphx
evanphx / eat.rb
Created October 15, 2014 23:23
Eat memory
mem = 1024 * 1024
ary = []
i = 0
loop {
p i
ary << (" " * mem)
i += 1
}
@evanphx
evanphx / test.rb
Created August 21, 2014 18:24
class TestMe
def run
3 + 4
end
end
TestMe.new.run
@evanphx
evanphx / gist:dba97762fda80610269f
Created August 13, 2014 18:28
gem_permadelete
#!/bin/sh
if [ -z "$1" ]; then
echo "gem_permdelete <gem name>"
exit 1
fi
echo "Connecting to rubygems.org..."
exec ssh -t -C app02.production.rubygems.org "cd /applications/rubygems/current && sudo -u deploy ./script/permadelete $1"
@evanphx
evanphx / important.rb
Created August 8, 2014 17:37
bitjockies draft order selection algorithm
urls = %w!
https://www.youtube.com/watch?v=lYIRO97dhII
https://www.youtube.com/watch?v=IM2MCCd-EnA
https://www.youtube.com/watch?v=LkCNJRfSZBU
https://www.youtube.com/watch?v=FtW7eaSvd6A
https://www.youtube.com/watch?v=sTSA_sWGM44
https://www.youtube.com/watch?v=21OH0wlkfbc
https://www.youtube.com/watch?v=e2jjCMgGOYw
https://www.youtube.com/watch?v=b2LseRItJb4
!
@evanphx
evanphx / gist:c1f90fec7a893178b462
Created August 7, 2014 18:12
Artifactory treating rubygems.org like a maven server
54.236.207.133 - - [07/Aug/2014:18:10:30 +0000] "HEAD /pd4ml/pd4ml_fonts/3.80/pd4ml_fonts-3.80-javadoc.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:30 +0000] "HEAD /net/jcip/jcip-annotations/1.0/jcip-annotations-1.0-javadoc.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:30 +0000] "HEAD /org/apache/xmlgraphics/batik-ext/1.7/batik-ext-1.7-sources.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:31 +0000] "HEAD /org/apache/xmlgraphics/batik-util/1.7/batik-util-1.7-sources.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:31 +0000] "HEAD /org/apache/xmlgraphics/batik-util/1.7/batik-util-1.7-javadoc.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:31 +0000] "HEAD /org/codehaus/woodstox/stax2-api/3.1.1/stax2-api-3.1.1-javadoc.jar HTTP/1.1" 404 0 "-" "Artifactory/3.2.2"
54.236.207.133 - - [07/Aug/2014:18:10:32 +0000] "HEAD /commons-httpclient/common
@evanphx
evanphx / gist:28f486c67c30bc94efb7
Created July 18, 2014 19:31
packer amazon-ebs security group errors
zero :: config/packer> packer build -only=amazon-ebs vm.json
amazon-ebs output will be in this color.
==> amazon-ebs: Creating temporary keypair: packer 53c975ff-7621-655b-eecc-c0362fd9d8e2
==> amazon-ebs: Creating temporary security group for this instance...
==> amazon-ebs: Authorizing SSH access on the temporary security group...
==> amazon-ebs: Launching a source AWS instance...
==> amazon-ebs: Error launching source instance: The security group 'sg-d304b9b6' does not exist in VPC 'vpc-a14728ca' (InvalidGroup.NotFound)
==> amazon-ebs: Deleting temporary security group...
==> amazon-ebs: Deleting temporary keypair...