https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
Tuesday, October 26, 2021
[C] continue
#include <stdio.h>
int main()
{
printf("Start\n");
int max_i = 10;
int i = 0;
while (i < max_i) {
i++;
if ((i/2) == 0) {
printf("Hello World i:%d\n",i);
continue;
} else {
printf("Hi World i:%d\n",i);
}
printf("while end\n");
}
return 0;
}
==============================================================
Start
Hello World i:1
Hi World i:2
while end
Hi World i:3
while end
Hi World i:4
while end
Hi World i:5
while end
Hi World i:6
while end
Hi World i:7
while end
Hi World i:8
while end
Hi World i:9
while end
Hi World i:10
while end
Monday, October 25, 2021
[Linux] PS
[root@study ~]# ps aux <==觀察系統所有的程序資料
[root@study ~]# ps -lA <==也是能夠觀察所有系統的資料
[root@study ~]# ps axjf <==連同部分程序樹狀態
while true; do
ps -eo pid,ppid,cmd,%mem,%cpu --sort -pcpu,+pmem
ps -eo pid,ppid,%mem,%cpu --sort -pcpu,+pmem | awk '{if ($3!=0){total1 += $3;print "MEM:"$3"%";}} END { print "MEM:"total1"%" }'
ps -eo pid,ppid,%mem,%cpu --sort -pcpu,+pmem | awk '{if ($4!=0){total2 += $4;print "CPU:"$4"%";}} END { print "CPU:"total2"%" }'
sleep 3;
done&
當要刪除 while....
先查詢 pid
PID TTY TIME CMD
15312 pts/84 00:00:00 ps
18095 pts/84 00:00:00 bash
kill -9 pid
Reference:
https://linux.cn/article-4743-1.html
https://blog.longwin.com.tw/2017/04/linux-ps-process-show-cpu-memory-2017/
Wednesday, October 20, 2021
[C++程式設計] 字串分割與連線
1. 字串分割
#include<string>
#include<iostream>
using namespace std;
vector<string> split(const string& str, const string& delim)
{
vector<string> res;
if ("" == str) return res;
// 先將要切割的字串從string型別轉換為char*型別
char * strs = new char[str.length() + 1]; //不要忘了
strcpy(strs, str.c_str());
char * d = new char[delim.length() + 1];
strcpy(d, delim.c_str());
char *p = strtok(strs, d);
while (p) {
string s = p; //分割得到的字串轉換為string型別
res.push_back(s); //存入結果陣列
p = strtok(NULL, d);
}
return res;
}
int main()
{
cout << "=====================================================================" << endl;
cout << "待分割的字串: " << PATH << endl;
std::vector<string> res = split(PATH, "/"); // 分割符為“/”
cout << "字串分割結果：";
for (int i = 0; i < res.size(); ++i)
{
cout << res[i] << " ";
}
cout << endl;
string root = "D:/ClothProject/DataHead/down/down_image/";
string name_image;
if (res.size() == 7)
name_image = res[4] + res[5];
else
name_image = res[4];
cout << "字串連線：" << name_image << endl;
gl.depthImagePath = root;
for (int i = 1; i < 8; i++)
{
if (i == 4)
continue;
// 數字與字串連線，需要使用to_string(i)
imwrite(gl.depthImagePath + name_image + "_" + to_string(i) + ".png", gl.images[i]);
}
cout << "=====================================================================" << endl;
return 0;
}
Reference:https://www.796t.com/article.php?id=184411https://blog.csdn.net/Mary19920410/article/details/77372828?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1.controlMonday, October 11, 2021
[JavaScript] 分開兩個屬性選擇器
input[class^='some_starting_constant_string'][class$='some_ending_constant_string']
console.log( document.querySelectorAll("[class*='start'][class$='end']") )
<div class="start__end"></div> <div class="start_heretoo_end"></div> <div class="sta__end"></div> <div class="rt__end"></div> <div class="start__d"></div>
Friday, October 8, 2021
Sunday, October 3, 2021
[docker] How to setup personal build environment?
Check images
docker image list
check your uid/gid
CMD: id johnny
uid=1099(johnny) gid=1099(johnny) groups=1099(johnny),133(docker)
start docker
CMD: docker run -it --name acesetup ace_env:v3 /bin/bash
root@2dac23d862a3:/#
add user
CMD: adduser johnny
finish password setting.
check your uid/gid in docker
CMD: id johnny
uid=1000(johnny) gid=1000(johnny) groups=1000(johnny)
uid/gid is differnet system & docker site. modify in docker container
CMD: usermod -u 1099 johnny
CMD: groupmod -g 1099 johnny
CMD: usermod -aG sudo johnny
exit docker container, and save the modify. (TAG)
CMD: exit
CMD: docker commit -m "add user johnny" abcsetup ace_env:johnny
check image again
CMD: docker image list
update and commit docker
docker start abcenv_ace
docker attach abcenv_ace
mkdir -p /opt/compiler_tool/selinux-3.1/sbin
ln -s /usr/sbin/setfiles /opt/compiler_tool/selinux-3.1/sbin/setfiles
exit
docker commit -m "ln -s /usr/sbin/setfiles /opt/compiler_tool/selinux-3.1/sbin/setfiles" abcenv_ace_env:ace
docker rm abcenv_ace
docker run --name abcenv_ace--privileged -v /extspace:/extspace -it abc_env:ace /bin/bash
docker start abcenv_ace
docker attach abcenv_ace
remove setup container
docker rm abcsetup
update and commit docker
docker start abcenv_ace
docker attach abcenv_ace
apt install python2
ln -s /usr/bin/python2.7 /usr/bin/python
exit
docker commit -m "ln -s /usr/bin/python2.7 /usr/bin/python" abc_env:johnny
docker rm abcenv_ace
docker run --name abcenv_ace--privileged -v /extspace:/extspace -it abc_env:ace /bin/bash
[docker] Docker image
建立個人專屬的Docker image
確認系統中，是否有docker image?
USERNAME@PC:~$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
android11_en1227 latest 7812c92c2149 2 months ago 7.33GB
查詢自己的UID，因為Docker啟動後，需要存取你在系統的檔案資料，所以需要同步UID
USERNAME@PC:~$ id USERNAME
uid=1009(USERNAME) gid=1009(USERNAME) groups=1009(USERNAME),133(docker)
啟動Docker容器
docker run -it --name android_build_env android11_en1227:latest /bin/bash
在Docker容器內，新增使用者 (輸入跟本機相同帳號密碼)
root@CONTAINER ID:/#adduser USERNAME
=====================================================
Adding user `USERNAME' ...
Adding new group `USERNAME' (1000) ...
Adding new user `USERNAME' (1000) with group `USERNAME' ...
Creating home directory `/home/USERNAME' ...
Copying files from `/etc/skel' ...
Enter new UNIX password: YOUER PASSWORD
Retype new UNIX password: YOUER PASSWORD
passwd: password updated successfully
Changing the user information for hunglin
Enter the new value, or press ENTER for the default
Full Name []: USERNAME
Room Number []:
Work Phone []:
Home Phone []:
Other []:
Is the information correct? [Y/n] Y
查詢UID，如果與本機不同，請接續下面command修改
id USERNAME Ex. uid=1001(USERNAME) gid=1001(USERNAME) groups=1000(USERNAME),121(docker)
修改UID/GID，與本機相同
usermod -u 1019 USERNAME
groupmod -g 1019 USERNAME
修改完成後，再透過id command確認，確認後，執行exit離開docker
儲存該階段docker容器
>>> 取得docker容器ID <<<
USERNAME@TPVPC:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7812c92c2149 android11_en1227:latest "/bin/bash" 20 hours ago Exited (0) 22 hours ago android_build_env
>>> 將這個docker打一個新的tag <<<
USERNAME@PC:~$ docker commit -m "commit message” CONTAINER_ID IMAGE:new_tag
ex. docker commit -m "add USERNAME" 7812c92c2149 android11_en1227:USERNAME
儲存後，將剛剛的docker容器停掉並卸載
停止容器
docker stop [nick_name or id]
ex. docker stop t32_build_env
卸載容器
docker rm [nick_name or id]
ex. docker rm t32_build_env
[docker] How to create docker image
1. 下載一個 ubuntu 18.04
docker pull ubuntu:18.04
2. 進入docker
docker run --name yoctoseed -it ubuntu:18.04 /bin/bash
3. 安裝關套件
過程中，會請你選擇一個區域(不確定有沒有什麼影響)，選擇Asia，然後選 Taipei。
wget -O gn http://storage.googleapis.com/chromium-gn/3fd43e5e0dcc674f0a0c004ec290d04bb2e1c60e
chmod 777 gn
mv gn /usr/bin/gn
4. 補充
apt-get install locales
dpkg-reconfigure locales
請選擇158. en_US.UTF-8 UTF-8 ，然後選擇 3. en_US.UTF-8
update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
完成後，將history清除即可退出docker
history -c
exit
5. 將容器轉出來
docker export yoctoseed > mt7663_yocto.tar
6. 移植到其他主機
cat mt7663_yocto.tar |docker import - mt7663_yocto
docker command
docker run \
-u johnny \
-v /usr/bin/hexdump:/usr/bin/hexdump:ro \
-v /etc/localtime:/etc/localtime:ro \
-v /mtk_proj/ref_mtkoss:/mtkoss \
-v /home/johnny:/home/johnny \
--name android_build \
-it android001:johnny /bin/bash
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