1. 通过ipinfo.io获取 Shell [root@host-10-166-224-8 ~]# curl ipinfo.io { "ip": "223.252.218.163", "hostname": "No Hostname", "city": "Guangzhou", "region": "Guangdong", "country": "CN", "loc": "23.1...

su切换用户时报无法设置用户ID:资源暂时不可用错误 Shell [root@salt ~]# vim /etc/security/limits.d/90-nproc.conf # Default limit for number of user's processes to prevent # accidental fork bombs. # See rhbz #432903 fo...

1. 创建一个2G的文件 Shell [root@salt tmp]# dd if=/dev/zero of=/tmp/test bs=1M count=2048 2048+0 records in 2048+0 records out 2147483648 bytes (2.1 GB) copied, 28.2023 s, 76.1 MB/s 12...

1. 删除命令 Shell [root@salt ~]# mv /usr/bin/yum /tmp/ 1 [root@salt ~]# mv /usr/bin/yum   /tmp/ 2. 查看yum命令属于哪个安装包（本机的已...