sed命令 定位 定位有两种匹配方式，第一种根据某行开头内容进行匹配；第二种根据关键字进行匹配。 第一种： sed -n '/^bbbb/=' file　　#在file文件中匹配所有以bbbb为开头的行 第二种： sed -n '/bbbb/=' file　　#在file文件中匹配所有含有bbbb关键字的行 删除 删除也是两种方式删除，第一种是根据…

To display the GRUB menu, comment GRUB_HIDDEN_TIMEOUT=0 and GRUB_HIDDEN_TIMEOUT_QUIET=true as shown in the image above The meaning of the above parameters is explained as foll…

This method only applies if the root password cannot be changed through the ECS console Check the/etc/default/grub cat /etc/default/grub Modify /etc/default/grub sed -i 's/GRU…

NFS stands for Network File-System, which enables file sharing between different machines and different systems through the network. Through NFS, you can access remote shared …

Start background tasksFor example, perform ping 114.114.114.114 in the background Start-Job -ScriptBlock {ping 114.114.114.114} From the return, you can see the basic informat…