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Linux 网卡速率（百兆/千兆）的查看及调整 - 操作系统(内核) - 清泛网 - 专...
...et/{ethXXX}/speed #查看某网卡的速率(MB)（百兆or千兆等）
ip -d link #查看网卡工作状态：UP -启用；DOWN -未启用
ethtool -s {ethXXX} [speed 10|100|1000] #设置网卡速率为10M/100M/1000M
注：上述命令仅限于物理机查看，虚拟机无效，虚拟机...
Local Storage vs Cookies
...
Cleard by JS or by Clear Browsing Data of the browser.
You can select when the data must be sent to the server.
The capacity is 5MB.
Data is stored indefinitely, and must be a string.
Only have one type.
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...
Still Reachable Leak detected by Valgrind
...d are almost always leaks.
Here is an example
int foo(void)
{
static char *working_buf = NULL;
char *temp_buf;
if (!working_buf) {
working_buf = (char *) malloc(16 * 1024);
}
temp_buf = (char *) malloc(5 * 1024);
....
....
....
}
Valgrind will report wo...
What is your most productive shortcut with Vim?
...e used as subjects for other "statements."
So, one way to cut an arbitrary selection of text would be to drop a mark (I usually use 'a' as my "first" mark, 'z' as my next mark, 'b' as another, and 'e' as yet another (I don't recall ever having interactively used more than four marks in 15 years of u...
Convert a string representation of a hex dump to a byte array using Java?
...;
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+ Character.digit(s.charAt(i+1), 16));
}
return data;
}
Reasons why it is an improvement:
Safe with leading zeros (unlike BigInteger) and wit...
Case objects vs Enumerations in Scala
...B', 3)
, KNIGHT('N', 3)
, ROOK('R', 5)
, PAWN('P', 1)
;
private char character;
private int pointValue;
private ChessPiece(char character, int pointValue) {
this.character = character;
this.pointValue = pointValue;
}
public int getCharacter() {
return character;
...
How to convert UTF-8 byte[] to string?
...
LINQ it: var decBytes2 = str.Split('-').Select(ch => Convert.ToByte(ch, 16)).ToArray();
– drtf
Jul 13 '14 at 14:43
...
Keep only first n characters in a string?
... are you'.substring(0,8);
Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'.
substring documentation
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...
How do I turn a String into a InputStreamReader in java?
... the trick:
InputStream is = new ByteArrayInputStream( myString.getBytes( charset ) );
Then convert to reader:
InputStreamReader reader = new InputStreamReader(is);
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...
How does `is_base_of` work?
...;B, D>&)
D* (Host<B, D>&)
This would mean that we can't select by constness anymore. In an ordinary overload resolution scenario, the call would now be ambiguous because normally the return type won't participate in overload resolution. For conversion functions, however, there is ...