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Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...ffffffff>] 0xffffffffffffffff
这时候按 Ctrl+C 也不能退出。
root@localhost:~# ls /jfs
^C
^C^C^C^C^C
但是用 strace 却能唤醒它，并且开始处理之前的中断信号，然后就退出了。
root@localhost:~# strace -p `pgrep ls`
strace: Process 26469 attached
--- SI...
String concatenation does not work in SQLite
... ||
Oracle CONCAT(string1, string2) or ||
MySQL CONCAT(string1, string2, string3...) or || if PIPES_AS_CONCAT enabled
Postgres CONCAT(string1, string2, string3...) or ||
Microsoft SQL Server 2012+ CONCAT(string1, string2, str...
Can someone explain in simple terms to me what a directed acyclic graph is?
... Andriyev, +1 for the deadlock example. This is in fact used by MySQL's InnoDB engine, and they call it a "wait-for-graph", as in, "that row has to wait for the lock on that row to be released"
– Roland Bouman
Feb 17 '10 at 19:40
...
Using ls to list directories and their total sizes
...%-7s ", SIZES["./" $9]), $0);
print $0
}
Sample output:
drwxr-xr-x 2 root root 4.0K Feb 12 16:43 cgi-bin
drwxrws--- 6 root www 20M Feb 18 11:07 document_root
drwxr-xr-x 3 root root 1.3M Feb 18 00:18 icons
drwxrwsr-x 2 localusr www 8.0K Dec 27 01:23 passwd
...
Python executable not finding libpython shared library
...ce configure directives to handle alternate library paths (not everyone is root you know...) In the simplest case all you need is the following:
./configure --enable-shared \
--prefix=/usr/local \
LDFLAGS="-Wl,--rpath=/usr/local/lib"
Or if you prefer the non-linux version...
How to do an update + join in PostgreSQL?
...
coming from mysql it's unintuitive that the same join used for select won't also update just by adding a set phrase :( still - the syntax for this is probably easier for a newcomer to sql to master.
– WEBjuju
...
How do you remove the root CA certificate that fiddler installs
Fiddler helpfully offers to add a unique root CA certificate to intercept HTTPS traffic.
4 Answers
...
How do I create a URL shortener?
...Take an auto-generated, unique numerical key (the auto-incremented id of a MySQL table for example).
For this example, I will use 12510 (125 with a base of 10).
Now you have to convert 12510 to X62 (base 62).
12510 = 2×621 + 1×620 = [2,1]
This requires the use of integer division and modulo. A ...
IIS - 401.3 - Unauthorized
...e account assigned to the app pool identity property
In IIS, at the server root node, set anonymous user to inherit from
app pool identity. (This was the part I struggled with)
To set the server anonymous to inherit from the app pool identity do the following..
Open IIS Manager (inetmgr)
In the ...
Check if full path given
...
Try using System.IO.Path.IsPathRooted? It also returns true for absolute paths.
System.IO.Path.IsPathRooted(@"c:\foo"); // true
System.IO.Path.IsPathRooted(@"\foo"); // true
System.IO.Path.IsPathRooted("foo"); // false
System.IO.Path.IsPathRooted(@"c:1\f...