Linux commands

1.Ubuntu install vscode;

sudo snap install --classic code
code --version;

 2.update upgrable upgrade

sudo apt update;
sudo apt list --upgradable;
sudo apt upgrade;

3.check process info

ps -ef;
ps -ef|grep proc_name;

 

4.install notepad++

sudo snap install notepad-plus-plus

 

5.install chrome 

wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo dpkg -i google-chrome-stable_current_amd64.deb

 

6.install uuid

sudo apt install uuid-dev

 

7.install mysql 

sudo apt install mysql-server

 

8.vlc

sudo snap install vlc;

 

9.linux QQ 3.0

#https://im.qq.com/linuxqq/index.shtml

#Copy link address
#Copy x86/deb/right/copy link address

wget https://dldir1.qq.com/qqfile/qq/QQNT/d3b9a722/linuxqq_3.2.0-16736_amd64.deb

sudo dpkg -i linuxqq_3.2.0-16736_amd64.deb

 

10.libmysqlcppconn

sudo apt install libmysqlcppconn-dev

 

11.g++13

sudo apt install gcc-13 g++-13
g++-13 --version

 

12.ubuntu install  various kinds of g++,copy from https://phoenixnap.com/kb/install-gcc-ubuntu

//https://phoenixnap.com/kb/install-gcc-ubuntu
sudo apt update;
sudo apt install software-properties-common;
sudo add-apt-repository ppa:ubuntu-toolchain-r/test;
sudo apt update;
sudo apt install gcc-12 g++-12 gcc-13 g++-13 -y;
dpkg --list|grep g++;

 13.grep multiple keywords from file,delimitted the keyword via  the backslash symbol '\'

grep 'keyword1\|keyword2\|keyword3' filename;

 grep  '12000000,\|15000000,\|18000000,' writelog.txt 
20231025001331_195767791num:12000000,time cost:2 seconds,2057 mills,2057510 micros,2057510652 nanos
20231025001333_232726487num:15000000,time cost:2 seconds,2028 mills,2028821 micros,2028821385 nanos
20231025001335_475633457num:18000000,time cost:2 seconds,2237 mills,2237399 micros,2237399540 nanos
20231025001632_116728474num:312000000,time cost:1 seconds,1741 mills,1741291 micros,1741291719 nanos
20231025001633_766074990num:315000000,time cost:1 seconds,1649 mills,1649300 micros,1649300341 nanos
20231025001635_390678186num:318000000,time cost:1 seconds,1624 mills,1624556 micros,1624556102 nanos
20231025001928_779043219num:612000000,time cost:1 seconds,1224 mills,1224591 micros,1224591953 nanos
20231025001930_230924162num:615000000,time cost:1 seconds,1451 mills,1451844 micros,1451844084 nanos
20231025001931_402347957num:618000000,time cost:1 seconds,1171 mills,1171394 micros,1171394201 nanos
20231025002222_059386913num:912000000,time cost:2 seconds,2184 mills,2184447 micros,2184447437 nanos
20231025002224_017179686num:915000000,time cost:1 seconds,1954 mills,1954387 micros,1954387761 nanos
20231025002225_808605652num:918000000,time cost:1 seconds,1786 mills,1786808 micros,1786808189 nanos
20231025002518_444803001num:1212000000,time cost:1 seconds,1324 mills,1324906 micros,1324906464 nanos
20231025002519_826971146num:1215000000,time cost:1 seconds,1382 mills,1382139 micros,1382139970 nanos
20231025002520_971298369num:1218000000,time cost:1 seconds,1144 mills,1144289 micros,1144289639 nanos

 14.curl download url file

//save the file as another file name
curl -o specified_filename url

//save the file as the original name 
curl -O url

curl -o test.jpg https://i1.hdslb.com/bfs/archive/f8301d035749f279921624c7987f65d2cbf8c4f4.jpg

curl -O https://i1.hdslb.com/bfs/archive/f8301d035749f279921624c7987f65d2cbf8c4f4.jpg

 15.find files greater than

find . -type f -size +500M;