大约有 40,000 项符合查询结果（耗时：0.0568秒） [XML]
Getting pids from ps -ef |grep keyword
...
pgrep -f keyword
From the man page:
-f The pattern is normally only matched against the process name. When -f is set, the full command line is used.
If you really want to avoid pgrep, try:
ps -ef | awk '/[k]eyword/{print $2}'
Note the [] around the first letter of the keywor...
How to write to file in Ruby?
...rs cleaning up outdated questions and answers. Makes for a better site overall.
– jdl
Oct 11 '12 at 16:43
7
...
NoSQL (MongoDB) vs Lucene (or Solr) as your database
...programmers detoxing from the RDBMS world. Unless one's used to it Lucene & Solr have a steeper learning curve.
There aren't many examples of using Lucene/Solr as a datastore, but Guardian has made some headway and summarize this in an excellent slide-deck, but they too are non-committal on tota...
Using vagrant to run virtual machines with desktop environment
...art xfce4. Use vagrant ssh and:
sudo apt-get install xfce4
sudo startxfce4&
If this is the first time you're running this Ubuntu environment, you'll need to run the following command before installing xfce4:
sudo apt-get update
That's it, you should be landed in a xfce4 session.
Update: ...
How to kill all processes with a given partial name? [closed]
I want to kill all processes that I get by:
14 Answers
14
...
C read file line by line
... if (fp == NULL)
exit(EXIT_FAILURE);
while ((read = getline(&line, &len, fp)) != -1) {
printf("Retrieved line of length %zu:\n", read);
printf("%s", line);
}
fclose(fp);
if (line)
free(line);
exit(EXIT_SUCCESS);
}
...
What is lexical scope?
...
I understand them through examples. :)
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer levels.
There is an...
How to get the raw value an field?
...
{
//Public Domain: no attribution required.
if ((element.validity) && (!element.validity.valid))
{
//if html5 validation says it's bad: it's bad
return false;
}
//Fallback to browsers that don't yet support html5 input validation
//Or we maybe want to perform ...
Should I use 'has_key()' or 'in' on Python dicts?
...1)). I've seen people do the "in dict.keys()" thinking it's more explicit & therefore better.
– Adam Parkin
Nov 9 '11 at 20:55
2
...
What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
The sample code below occurred naturally. Suddenly my code thew a very nasty-sounding FatalExecutionEngineError exception. I spent a good 30 minutes trying to isolate and minimize the culprit sample. Compile this using Visual Studio 2012 as a console app:
...