Some commonly used linux command records and backups collected by individuals
Firewall
//Open port 8080
firewall-cmd --zone=public --add-port=8080/tcp --permanent
// restart the firewall
firewall-cmd --reload
filter port process
netstat -tnlp | grep 3001
ps -ef | grep 3000
View process status
ps -aux | grep java
View the ports occupied by the process
netstat -tnlp | grep java
lsof can list open files and list information about files opened by processes on the system.
lsof -i -P | grep java
Modify the user and user group to which the file belongs (R: including all subfiles)
chown -vR user:user up-sys/
Modify file permissions (R: include all subfiles)
chmod -R 777 fileName
check disk space
df－lh
ll | grep ".x" | awk -F ' ' '{print $2}' | sort -n | uniq -c
Soft link (when creating a soft link, there is no need to create a folder)
ln -s fileName newFileName
Result: newFileName => fileName
hide log
set +o history
open hidden log
set -o history
compression
tar -cvf jpg.tar *.jpg //将目录里所有jpg文件打包成tar.jpg
tar -czf jpg.tar.gz *.jpg //将目录里所有jpg文件打包成jpg.tar后，并且将其用gzip压缩，生成一个gzip压缩过的包，命名为jpg.tar.gz
tar -cjf jpg.tar.bz2 *.jpg //将目录里所有jpg文件打包成jpg.tar后，并且将其用bzip2压缩，生成一个bzip2压缩过的包，命名为jpg.tar.bz2
tar -cZf jpg.tar.Z *.jpg //将目录里所有jpg文件打包成jpg.tar后，并且将其用compress压缩，生成一个umcompress压缩过的包，命名为jpg.tar.Z
rar a jpg.rar *.jpg //rar格式的压缩，需要先下载rar for linux
zip jpg.zip *.jpg //zip格式的压缩，需要先下载zip for linux
decompress
tar -xvf file.tar //解压 tar包
tar -xzvf file.tar.gz //解压tar.gz
tar -xjvf file.tar.bz2 //解压 tar.bz2
tar -xZvf file.tar.Z //解压tar.Z
unrar e file.rar //解压rar
unzip file.zip //解压zip
scp upload file
scp -P 12349 upload_file username@server
-r folder
clean disk - clean log (redirect empty file)
[root@hb logs]# > catalina.out