In your command-line run the following commands:
brew doctor
brew update
In your command-line run the following commands:
brew doctor
brew update
# Generate a new pgp key: (better to use gpg2 instead of gpg in all below commands) | |
gpg --gen-key | |
# maybe you need some random work in your OS to generate a key. so run this command: `find ./* /home/username -type d | xargs grep some_random_string > /dev/null` | |
# check current keys: | |
gpg --list-secret-keys --keyid-format LONG | |
# See your gpg public key: | |
gpg --armor --export YOUR_KEY_ID | |
# YOUR_KEY_ID is the hash in front of `sec` in previous command. (for example sec 4096R/234FAA343232333 => key id is: 234FAA343232333) |
Note: This was written in 2015, it may be out of date now.
There are a lot of commands here which I use
sudo
if you don't know what you're doing withsudo
, especially where Irm
you can severely screw up your system.
There are many reasons which you would want to remove a piece of software such as McAfee, such as not wanting it to hammer your CPU during work hours which seems like primetime for a virus scan.
I intend this to be a living document, I have included suggestions from peoples' replies.
# Base dirs | |
SRC_DIR = src | |
TMP_DIR = tmp | |
DEV_DIR = dev | |
SRC_PUBLIC_DIR := $(SRC_DIR)/public | |
SRC_STYLES_DIR := $(SRC_DIR)/styles | |
SRC_SCRIPTS_DIR := $(SRC_DIR)/scripts | |
TMP_SCRIPTS_DIR := $(TMP_DIR)/scripts | |
DEV_PUBLIC_DIR := $(DEV_DIR)/public | |
DEV_STYLES_DIR := $(DEV_DIR)/styles |
# Video: http://rubyhoedown2008.confreaks.com/08-chris-wanstrath-keynote.html | |
Hi everyone, I'm Chris Wanstrath. | |
When Jeremy asked me to come talk, I said yes. Hell yes. Immediately. But | |
then I took a few moments and thought, Wait, why? Why me? What am I supposed | |
to say that's interesting? Something about Ruby, perhaps. Maybe the | |
future of it. The future of something, at least. That sounds | |
keynote-y. | |
Latency Comparison Numbers | |
-------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |