This is the very first post of my blog.
And here is one of the most gorgeous champions from League of Legends.
Hope I can get my MySQL index command result and my visa as early as possible. : )
ffmpeg -i music.mp3 file.jpg
Move current to previous
git checkout HEAD^
Copy current commit to this branch
git rebase main
Move main to c6
git branch -f main c6
Jump to the previous commit
git reset HEAD^
Jump to the this commit
git reset C3
New commit C2 introduces changes – it just happens to introduce changes that exactly reverses the commit of C2
git revert HEAD
Copy commit to current branch:
git cherry-pick C3 C4
Interactive rebase, choose commits manually
git rebase -i HEAD~4
Tag a commit
git tag v0 c1
Finds the most recent tag that is reachable from a commit
git describe <ref>
wget --no-check-certificate -O shadowsocks-all.sh https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocks-all.sh
chmod +x shadowsocks-all.sh
./shadowsocks-all.sh 2>&1 | tee shadowsocks-all.log
Source: Teddysun’s Blog
iptables -A INPUT -p tcp --dport PORTNUMBER -j ACCEPT
iptables -F
netstat -apn | grep PORTNUMBER
Source: Michany’s Blog
]]>Applications > WeChat.app > Contents > Resources
Then delete Assets.car
Update:
I found the previous solution not working very well. Though no Wechat icon in menu bar, there is still a placeholder and it will show numbers when you receive new messages.
So, try Dozer, move the icons you want to hide to the left of the Dozer icon, and then enable Hide both Dozer icons when status bar are hidden. You will not see the annoying Wechat icon anymore.
]]>tmutil listlocalsnapshots /
Delete all local snapshots:
for snapshot in $(tmutil listlocalsnapshotdates | grep -v :); do sudo tmutil deletelocalsnapshots $snapshot; done
Monitor and analyze hard drive health:
smartctl -a disk0
&：
0 & 0 = 0
0 & 1 = 0
1 & 0 = 0
1 & 1 = 1
XOR:
0 ^ 0 = 0
0 ^ 1 = 1
1 ^ 0 = 1
1 ^ 1 = 0
0101 (decimal 5)
XOR 0011 (decimal 3)
= 0110 (decimal 6)
0010 (decimal 2)
XOR 1010 (decimal 10)
= 1000 (decimal 8)
|:
0 | 0 = 0
0 | 1 = 1
1 | 0 = 1
1 | 1 = 1
&：
0 & 0 = 0
0 & 1 = 0
1 & 0 = 0
1 & 1 = 1
~：
~1 = 0
~0 = 1
<<：
shifts a bit pattern to the left
左边的二进制位丢弃，右边补0
-1 = 11111111111111111111111111111111
-1 << 31 = 10000000000000000000000000000000 = -2147483648
-2147483648 << 1 = 0
-1 << 32 = 11111111111111111111111111111111 = -1
32 mod 32 = 0
so, -1 << 32 = -1 << 0 = -1
-1 << 31 << 1 = 0
>>：
shifts a bit pattern to the right, the bit pattern is given by the left-hand operand
正数左补0，负数左补1，右边丢弃
>>>：
shifts a zero into the leftmost position
忽略符号位，空位都以0补齐
const timer = ms=>new Promise(res=>setTimeout(res, ms))
async function load() {
var i = 0;
while (i < 60) {
await timer(100);
i++;
console.log(i);
let formData = new FormData();
formData.append("propId", "268");
formData.append("propCount", 1);
formData.append("roomId", YourRoomID);
fetch('https://www.douyu.com/japi/prop/donate/mainsite/v1', {
method: 'POST',
body: formData
}).then(res=>res.json()).then(res=>{
if (res && 'error'in res && res.error === 0) {
console.log('成功赠送主播 : ' + YourRoomID + ' 一个荧光棒');
} else {
console.log('赠送失败 : ' + res.msg);
}
}
);
}
}
load();
SHOW GLOBAL VARIABLES LIKE 'local_infile';
SET GLOBAL local_infile = 'ON';
SHOW GLOBAL VARIABLES LIKE 'local_infile';
load data local infile '.txt' into table TABLENAME fields terminated by '-';
set sql_log_bin=0;
set unique_checks = 0;
set foreign_key_checks = 0;
set autocommit = 0;
LOAD DATA local INFILE '.txt' INTO TABLE TABLENAME;
SET UNIQUE_CHECKS = 1;
SET FOREIGN_KEY_CHECKS = 1;
COMMIT;
SET GLOBAL local_infile = 'ON';
SHOW GLOBAL VARIABLES LIKE 'local_infile';
alter table test1 add index(id);
mysql -u root -p --local-infile
sudo mysql –local-infile=1 -u root -p
sudo du -h /var/lib/mysql
sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'
export HISTTIMEFORMAT="%F %T "
nohup ./frpc -c ./frpc.ini &
This is the very first post of my blog.
And here is one of the most gorgeous champions from League of Legends.
Hope I can get my MySQL index command result and my visa as early as possible. : )