start new:
tmux
start new with session name:
tmux new -s myname
import functools | |
import sys | |
def robust(expected, retry=3): | |
def wrapper(func): | |
@functools.wraps(func) | |
def robust_run(*args, **kw): | |
n = 0; | |
result = None | |
while n < retry: |
import os | |
""" | |
as bash command: du -sb dir | |
+4906: add 4096bytes for the top dir | |
""" | |
def du_sb(dir): | |
return sum(os.path.getsize(f) for f in reduce(lambda x,y:x+y, [[os.path.join(w[0], fe) for fe in w[1] + w[2]] for w in os.walk(dir)])) + 4096; | |
def get_total_file_size(dir): | |
return sum(os.path.getsize(f) for f in reduce(lambda x,y:x+y, [[os.path.join(w[0], fe) for fe in w[1] + w[2]] for w in os.walk(dir)]) if os.path.isfile(f)) |
# copy from http://www.tldp.org/LDP/abs/html/sample-bashrc.html | |
function extract() # Handy Extract Program | |
{ | |
if [ -f $1 ] ; then | |
case $1 in | |
*.tar.bz2) tar xvjf $1 ;; | |
*.tar.gz) tar xvzf $1 ;; | |
*.bz2) bunzip2 $1 ;; | |
*.rar) unrar x $1 ;; | |
*.gz) gunzip $1 ;; |
# encoding: utf-8 | |
import zlib | |
""" | |
copy from: | |
https://github.com/afirel/consistent_hashr/blob/master/lib/consistent_hashr.rb | |
http://www.tom-e-white.com/2007/11/consistent-hashing.html | |
""" | |
class ConsistentHash(object): |
# open macdown from terminal | |
# from https://github.com/MacDownApp/macdown/wiki/Advanced-Usage | |
macdown() { | |
"$(mdfind kMDItemCFBundleIdentifier=com.uranusjr.macdown | head -n1)/Contents/SharedSupport/bin/macdown" $@ | |
} |
ping cn.bing.com | while read pong; do echo "$(date): $pong"; done |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
git_branch() { | |
gb=$(git branch 2>/dev/null | grep '^*' | tr -d '* ') | |
[[ ! -z $gb ]] && echo "($gb)" | |
} | |
export PS1="\\W\$(git_branch) $" |