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How do I write a bash script to restart a process if it dies?
...
Consider this:
PID recycling (killing the wrong process):
/etc/init.d/foo start: start foo, write foo's PID to /var/run/foo.pid
A while later: foo dies somehow.
A while later: any random process that starts (call it bar) takes a random PID, imagine it taking foo's old PID.
You notice foo's gone...
CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...印证我们的想法。
我们先来看看CoInitialize的汇编
769B2A24 mov edi, edi
769B2A26 push ebp
769B2A27 mov ebp, esp
769B2A29 push 2 ; dwCoInit
769B2A2B push [ebp+8] ; pvR...
Getting ssh to execute a command in the background on target machine
... be overcome by redirecting all three
I/O streams:
nohup myprogram > foo.out 2> foo.err < /dev/null &
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Relative paths in Python
...oesn't appear to be the case on my system (python 2.5.1 on OS X 10.5.7):
#foo.py
import os
print os.getcwd()
print __file__
#in the interactive interpreter
>>> import foo
/Users/jason
foo.py
#and finally, at the shell:
~ % python foo.py
/Users/jason
foo.py
However, I do know that there...
is node.js' console.log asynchronous?
... // For example: node foo.js > out.txt
stdout.readable = false;
}
return stdout;
});
In case of a TTY and UNIX we end up here, this thing inherits from socket. So all that node bascially does is to push the data on to the socket, the...
How can I do DNS lookups in Python, including referring to /etc/hosts?
...
>>> print socket.getaddrinfo('google.com', 80)
[(10, 1, 6, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 2, 17, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 3, 0, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 1, 6, '', ('2a00:1450:8006::68', 80, 0, 0)), (10, 2, 17, '', ('2a00:1450:8006::68', 80...
How to add two strings as if they were numbers? [duplicate]
...
function addStrings(str1, str2){
str1a = str1.split('').reverse();
str2a = str2.split('').reverse();
let output = '';
let longer = Math.max(str1.length, str2.length);
let carry = false;
for (let i = 0; i < longer; i++) {
let result
if (str1a[i] && str2a[i]) {
re...
How to get client's IP address using JavaScript?
...u0bbf\u0bb4\u0bcd"
},
{
"name": "Chinese",
"native": "\u4e2d\u6587"
}
],
"currency": {
"name": "Singapore Dollar",
"code": "SGD",
"symbol": "S$",
"native": "$",
"plural": "Singapore dollars"
},
"time_zone": {
"name": "Asia/Singapore",
"abbr...
Uppercase Booleans vs. Lowercase in PHP
...only way you can mess things up is by quoting those values, for example:
$foo = false; // FALSE
$bar = "false"; // TRUE
$foo2 = true; // TRUE
$bar2 = "true"; // TRUE
$foo3 = null; // NULL
$bar3 = "null"; // TRUE
Only thing restricting or encouraging you to use upper or lowercase might be ...
How can I merge two commits into one if I already started rebase?
...sage of the new combined commit:
$ git log --pretty=oneline
18fd73d3ce748f2a58d1b566c03dd9dafe0b6b4f b and c
df239176e1a2ffac927d8b496ea00d5488481db5 a
Note About Rewriting History
Interactive rebase rewrites history. Attempting to push to a remote that contains the old history will fail because...