1.进入U盘启动系统,确认网络状态 2.使用dd命令将原盘数据备份到网络磁盘 #比如原设备为 /dev/sda1 网络磁盘地址为192.168.1.10:/home/srcddif=/dev/sda1 |sshuser@192.168.1.10ddof=/home/src/disk.back 3.恢复是使用反向操作 sshuser@192.168.1.10"dd if=/home/src/disk.back"|sudoddof=/dev/sda1 注意...
The ‘dd’ command, which stands for "data duplicator," is a powerful and versatile utility in the Linux operating system. While its primary function is to copy and convert data, its capabilities extend far beyond simple duplication. System administrators, power users, and those seeking to perfo...
The `kill' command makes it output intermediate I/O statistics, and when `dd' completes normally or is killed by the `SIGINT' signal, it outputs the final statistics. $ dd if=/dev/zero of=/dev/null count=10MB & pid=$! $ kill -s INFO $pid; wait $pid 3385223+0 records in 3385223...
1. `iflag=direct`: This flag enables direct I/O for the input file. With this flag set, the `dd` command bypasses the kernel buffer cache and performs direct reads from the input file. This can be useful in scenarios where you want to minimize the involvement of the operating system’...
(bashrc中的rc为run command的缩写,来源于麻省理工的runcom,表示:从档案中取出命令来执行) 测试磁盘读写速度:dd, device driver的缩写dd if= /dev/zero of=/tmp/output.txt bs=8k count=256k conv=ascii 查看linux系统信息:uname -a (unix name的缩写, 查看内核/OS/ CPU信息)cat /proc/cpuinfoarch查看...
Command:进程启动的启动命令名称,如果这一行显示不下,进程会有一个完整的命令行。 top命令使用过程中,还可以使用一些交互的命令来完成其它参数的功能。这些命令是通过快捷键启动的。 <空格>:立刻刷新。 P:根据CPU使用大小进行排序。 T:根据时间、累计时间排序。 q:退出top命令。
As does any command with redirected output, this sends some stuff from the standard output to a file. However, the file is /dev/null, a device, and the kernel decides what to do with any data written to this device. In the case of /dev/null, the kernel simply ignores the input and...
rootfs分区" fi while [ ! -e $device ] do sleep 1 echo "wait for $device appear" done echo "正在烧写${Uboot}到${device}" execute "dd if=$sdkdir/boot/$Uboot of=$device bs=1024 seek=1 conv=fsync" sync echo "烧写${Uboot}到${device}完成!" echo "正在准备复制..." echo "...
#获取2小时后时间 yyyy-MM-dd HH:mm:ss 格式 twohourage2=`date --date='2 hours' "+%Y-%m-%d %H:%M:%S"` #获取1个月前时间 yyyy-MM-dd HH:mm:ss 格式 date --date='1 month ago' "+%Y-%m-%d %H:%M:%S" #获取1个月加1天前时间 yyyy-MM-dd HH:mm:ss 格式 ...
If we increase the block size for the dd command, we can get even higher throughput. For fuse-archive with the .tar.zstd: $ time dd if=mnt/zerotest/zeroes of=/dev/null status=progress bs=16384 65536+0 records in 65536+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.3186...