CentOS Tips#
yum list installed | grep gcc
yum list installed | grep lrzsz
lrzsz#
yum -y install lrzsz
sz /home/shelldir/*.sh
:下载目录
离线安装#
mkdir -p ~/tool/lrzsz/
mv lrzsz-0.12.20.tar.gz ~/tool/lrzsz/
cd ~/tool/lrzsz/
tar -zxvf lrzsz-0.12.20.tar.gz
cd lrzsz-0.12.20
./configure --prefix=~/tool/lrzsz/
make && make install
cd ~/tool/lrzsz/bin
ln -s lsz sz
ln -s lrz rz
#修改环境变量,在~/.bashrc文件末尾加入export PATH="~/tool/lrzsz/bin:$PATH"
vi ~/.bashrc
source ~/.bashrc
iptables#
暂时关闭/打开
service iptables stop
service iptables start
永久打开/关闭
chkconfig iptables on
chkconfig iptables off
验证
chkconfig --list | grep iptables
network#
service network restart
ntpdate#
yum -y install ntp ntpdate
vim /etc/rc.d/rc.local
/usr/sbin/ntpdate cn.pool.ntp.org
telnet#
yum install telnet
zip#
yum -y install zip
Commands#
bc#
scale=2
sar#
yum install sysstat
mail#
yum -y install mailx
yum install sendmail
vim#
yum -y install vim*
sudo#
sudo visudo
sysadmin ALL=(ALL) NOPASSWD:ALL
git#
sudo yum -y install git
git --version
git config --global user.name "T5750"
git config --global user.email "you@example.com"
git config --list
AppStream#
cd /etc/yum.repos.d
sudo mkdir backup
sudo mv *.repo backup/
sudo curl -o /etc/yum.repos.d/Centos-vault-8.5.2111.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
yum clean all && yum makecache