舟山建设工程信息网站,万户网络科技有限公司怎么样,网站建设与管理的实训报告,微信网站建设报价表ddrescue和dd
区别#xff1a;
GNU ddrescue 不是 dd 的衍生物#xff0c;也与 dd 没有任何关系 除了两者都可用于将数据从一台设备复制到另一台设备。 关键的区别在于 ddrescue 使用复杂的算法来复制 来自故障驱动器的数据#xff0c;尽可能少地造成额外的损坏。ddrescue…ddrescue和dd
区别
GNU ddrescue 不是 dd 的衍生物也与 dd 没有任何关系 除了两者都可用于将数据从一台设备复制到另一台设备。 关键的区别在于 ddrescue 使用复杂的算法来复制 来自故障驱动器的数据尽可能少地造成额外的损坏。ddrescue具备更强大的错误处理和恢复机制可以更好地处理损坏的数据。ddrescue可以逐渐恢复数据首先尝试读取易读的部分然后再处理更难访问的区域。dd是一个基础的命令用于一般的数据复制任务而ddrescue专注于数据恢复因此在某些方面更复杂。如果你的任务是简单的数据复制可能选择dd足够了。但如果你处理的是受损的硬盘或需要更复杂的数据恢复操作ddrescue可能更适合。
dd命令
dd是一个用于复制文件和设备的基本命令。它以块为单位操作数据可以用于复制整个磁盘、分区或文件。dd对于数据恢复来说非常基础它简单粗暴没有内建的错误处理机制。dd命令是一种直接复制和写入数据的工具而不会考虑目标设备上是否已有数据。因此在执行这个命令之前请确保 /dev/sdb 上的所有数据都是你可以丢弃的或者在执行之前进行备份。
命令描述sudo dd if/dev/sda of/dev/sdb bs4M从 /dev/sda 复制整个设备的内容到 /dev/sdb块大小为4兆字节。这将覆盖 /dev/sdb 上的所有数据。较大的块大小可以提高性能但也可能导致更多的浪费特别是在尝试恢复数据时。sudo dd if/dev/sda ofbackup.img bs1G count1创建一个名为 backup.img 的映像文件其中包含 /dev/sda 的前1个千兆字节的数据。sudo dd ifsource.img of/dev/sdb bs8M将名为 source.img 的映像文件的内容写入到 /dev/sdb块大小为8兆字节。这会覆盖 /dev/sdb 上的所有数据。sudo dd if/dev/zero of/dev/sdb bs1M count10使用 /dev/zero 中的数据全0覆盖 /dev/sdb 的前10兆字节。这可以用于擦除设备上的前几个块。sudo dd if/dev/sda of/dev/sdb bs512 count100bs512指定块大小为512字节即一个扇区的大小。 count100指定要拷贝的扇区数目。sudo dd if/dev/sda of/dev/sdb bs4M seek1sudo dd if/dev/sda of/dev/sdb bs4M seek100从 /dev/sda 复制数据到 /dev/sdb但从 /dev/sdb 的第100个块之后开始写入。这是一个在目标设备上追加数据。
linux下dd命令的简单图形界面工具easydd
ddrescue命令
ddrescue是专门设计用于数据恢复的命令。它被设计成能够处理磁盘上的坏块损坏的数据区域并尽量从损坏的地方恢复尽可能多的数据。ddrescue会首先尝试读取易读的部分然后在后续尝试中逐渐尝试读取更难访问的区域。
命令描述sudo ddrescue /dev/sda /dev/sdb logfile这个例子将源设备 /dev/sda 的内容复制到目标设备 /dev/sdb并将恢复的信息记录到 logfile 中。sudo ddrescue /dev/sda /dev/sdb rescued.img尝试从 /dev/sda 复制数据到 /dev/sdb并将已恢复的数据写入 rescued.img。这个命令默认尝试从容易读取的部分开始逐渐处理难以读取的部分。sudo ddrescue -n /dev/sda /dev/sdb rescued.img使用 ddrescue 的快速模式只复制容易读取的数据。这个命令只进行一次尝试不尝试处理难以读取的部分。sudo ddrescue -r 3 /dev/sda /dev/sdb rescued.img在复制时尝试最多 3 次从难以读取的部分恢复数据。sudo ddrescue -d -r 3 /dev/sda /dev/sdb rescued.img在尝试读取时显示调试信息并且最多尝试 3 次。sudo ddrescue -b 4096 /dev/sda /dev/sdb rescued.img设置块大小为 4096 字节。这允许更精细的控制读取和写入的数据块大小。sudo ddrescue -c 1M /dev/sda /dev/sdb rescued.img设置聚类大小为 1 兆字节这有助于加快处理速度特别是在处理大容量存储设备时。sudo ddrescue --fill-mode /dev/sda /dev/sdb rescued.img使用 填充模式在写入时填充已损坏的区域。sudo ddrescue --retry-passes3 /dev/sda /dev/sdb rescued.img设置最大重试次数为 3 次。在每个重试阶段结束时ddrescue 将记录已经复制的数据并尝试恢复尽可能多的数据。sudo ddrescue --timeout10s /dev/sda /dev/sdb rescued.img设置超时时间为 10 秒在此时间内尝试读取数据。如果在规定的时间内未能读取数据则放弃当前尝试。
Android 设备 Android 调试桥Android Debug Bridge简称 adb是一种用于在计算机和 Android 设备之间进行通信的命令行工具。它允许开发者通过 USB 或网络连接在计算机和 Android 设备之间传输文件、执行命令和调试应用程序。 Copy full disk image from Android to computer:在某些情况下你可能不需要使用 dd 命令来直接复制设备的数据。相反你可以确保 Android 调试桥adb以 root 权限运行然后使用 adb pull 命令直接获取分区的块设备文件。
安装 ADB ADB 包含在 Android SDK软件开发工具包中。下载并安装 Android Studio或者只下载并安装 SDK 工具其中包含了 adb。 启用 USB 调试 在 Android 设备上使用 adb 之前你需要确保 USB 调试已经启用。在设备的设置中进入 “开发者选项” 并启用 “USB 调试”。 连接设备 使用 USB 数据线将 Android 设备连接到计算机。确保设备以 MTP媒体传输协议或 PTP图片传输协议模式连接。 运行 ADB 命令 打开终端或命令提示符导航到 Android SDK 的 platform-tools 目录并运行 adb 命令。
kubuntukubuntu:/media/kubuntu/系统/ESSENTIAL_FILE/ENV_ANDROID/SDK/platform-tools$ ./adb --version
Android Debug Bridge version 1.0.41
Version 34.0.5-10900879
Installed as /media/kubuntu/系统/ESSENTIAL_FILE/ENV_ANDROID/SDK/platform-tools/adb
Running on Linux 5.15.0-67-generic (x86_64)./adb --help
Android Debug Bridge version 1.0.41
Version 34.0.5-10900879
Installed as /media/kubuntu/系统/ESSENTIAL_FILE/ENV_ANDROID/SDK/platform-tools/adb
Running on Linux 5.15.0-67-generic (x86_64)global options:-a listen on all network interfaces, not just localhost-d use USB device (error if multiple devices connected)-e use TCP/IP device (error if multiple TCP/IP devices available)-s SERIAL use device with given serial (overrides $ANDROID_SERIAL)-t ID use device with given transport id-H name of adb server host [defaultlocalhost]-P port of adb server [default5037]-L SOCKET listen on given socket for adb server [defaulttcp:localhost:5037]--one-device SERIAL|USB only allowed with start-server or server nodaemon, server will only connect to one USB device, specified by a serial number or USB device address.--exit-on-write-error exit if stdout is closedgeneral commands:devices [-l] list connected devices (-l for long output)help show this help messageversion show version numnetworking:connect HOST[:PORT] connect to a device via TCP/IP [default port5555]disconnect [HOST[:PORT]]disconnect from given TCP/IP device [default port5555], or allpair HOST[:PORT] [PAIRING CODE]pair with a device for secure TCP/IP communicationforward --list list all forward socket connectionsforward [--no-rebind] LOCAL REMOTEforward socket connection using:tcp:port (local may be tcp:0 to pick any open port)localabstract:unix domain socket namelocalreserved:unix domain socket namelocalfilesystem:unix domain socket namedev:character device namejdwp:process pid (remote only)vsock:CID:port (remote only)acceptfd:fd (listen only)forward --remove LOCAL remove specific forward socket connectionforward --remove-all remove all forward socket connectionsreverse --list list all reverse socket connections from devicereverse [--no-rebind] REMOTE LOCALreverse socket connection using:tcp:port (remote may be tcp:0 to pick any open port)localabstract:unix domain socket namelocalreserved:unix domain socket namelocalfilesystem:unix domain socket namereverse --remove REMOTE remove specific reverse socket connectionreverse --remove-all remove all reverse socket connections from devicemdns check check if mdns discovery is availablemdns services list all discovered servicesfile transfer:push [--sync] [-z ALGORITHM] [-Z] LOCAL... REMOTEcopy local files/directories to device--sync: only push files that are newer on the host than the device-n: dry run: push files to device without storing to the filesystem-z: enable compression with a specified algorithm (any/none/brotli/lz4/zstd)-Z: disable compressionpull [-a] [-z ALGORITHM] [-Z] REMOTE... LOCALcopy files/dirs from device-a: preserve file timestamp and mode-z: enable compression with a specified algorithm (any/none/brotli/lz4/zstd)-Z: disable compressionsync [-l] [-z ALGORITHM] [-Z] [all|data|odm|oem|product|system|system_ext|vendor]sync a local build from $ANDROID_PRODUCT_OUT to the device (default all)-n: dry run: push files to device without storing to the filesystem-l: list files that would be copied, but dont copy them-z: enable compression with a specified algorithm (any/none/brotli/lz4/zstd)-Z: disable compressionshell:shell [-e ESCAPE] [-n] [-Tt] [-x] [COMMAND...]run remote shell command (interactive shell if no command given)-e: choose escape character, or none; default ~-n: dont read from stdin-T: disable pty allocation-t: allocate a pty if on a tty (-tt: force pty allocation)-x: disable remote exit codes and stdout/stderr separationemu COMMAND run emulator console commandapp installation (see also adb shell cmd package help):install [-lrtsdg] [--instant] PACKAGEpush a single package to the device and install itinstall-multiple [-lrtsdpg] [--instant] PACKAGE...push multiple APKs to the device for a single package and install theminstall-multi-package [-lrtsdpg] [--instant] PACKAGE...push one or more packages to the device and install them atomically-r: replace existing application-t: allow test packages-d: allow version code downgrade (debuggable packages only)-p: partial application install (install-multiple only)-g: grant all runtime permissions--abi ABI: override platforms default ABI--instant: cause the app to be installed as an ephemeral install app--no-streaming: always push APK to device and invoke Package Manager as separate steps--streaming: force streaming APK directly into Package Manager--fastdeploy: use fast deploy--no-fastdeploy: prevent use of fast deploy--force-agent: force update of deployment agent when using fast deploy--date-check-agent: update deployment agent when local version is newer and using fast deploy--version-check-agent: update deployment agent when local version has different version code and using fast deploy--local-agent: locate agent files from local source build (instead of SDK location)(See also adb shell pm help for more options.)uninstall [-k] PACKAGEremove this app package from the device-k: keep the data and cache directoriesdebugging:bugreport [PATH]write bugreport to given PATH [defaultbugreport.zip];if PATH is a directory, the bug report is saved in that directory.devices that dont support zipped bug reports output to stdout.jdwp list pids of processes hosting a JDWP transportlogcat show device log (logcat --help for more)security:disable-verity disable dm-verity checking on userdebug buildsenable-verity re-enable dm-verity checking on userdebug buildskeygen FILEgenerate adb public/private key; private key stored in FILE,scripting:wait-for[-TRANSPORT]-STATE...wait for device to be in a given stateSTATE: device, recovery, rescue, sideload, bootloader, or disconnectTRANSPORT: usb, local, or any [defaultany]get-state print offline | bootloader | deviceget-serialno print serial-numberget-devpath print device-pathremount [-R]remount partitions read-write. if a reboot is required, -R willwill automatically reboot the device.reboot [bootloader|recovery|sideload|sideload-auto-reboot]reboot the device; defaults to booting system image butsupports bootloader and recovery too. sideload rebootsinto recovery and automatically starts sideload mode,sideload-auto-reboot is the same but reboots after sideloading.sideload OTAPACKAGE sideload the given full OTA packageroot restart adbd with root permissionsunroot restart adbd without root permissionsusb restart adbd listening on USBtcpip PORT restart adbd listening on TCP on PORTinternal debugging:start-server ensure that there is a server runningkill-server kill the server if it is runningreconnect kick connection from host side to force reconnectreconnect device kick connection from device side to force reconnectreconnect offline reset offline/unauthorized devices to force reconnectusb:attach attach a detached USB devicedetach detach from a USB device to allow use by other processes
environment variables:$ADB_TRACEcomma/space separated list of debug info to log:all,adb,sockets,packets,rwx,usb,sync,sysdeps,transport,jdwp$ADB_VENDOR_KEYS colon-separated list of keys (files or directories)$ANDROID_SERIAL serial number to connect to (see -s)$ANDROID_LOG_TAGS tags to be used by logcat (see logcat --help)$ADB_LOCAL_TRANSPORT_MAX_PORT max emulator scan port (default 5585, 16 emus)$ADB_MDNS_AUTO_CONNECT comma-separated list of mdns services to allow auto-connect (default adb-tls-connect)Online documentation: https://android.googlesource.com/platform/packages/modules/adb//refs/heads/master/docs/user/adb.1.md
$ ./adb devices
List of devices attached
SJQ4C19325004095 unauthorized
》手机上选择“允许调试”》
$ ./adb devices
List of devices attached
SJQ4C19325004095 device常见 ADB 命令
./adb shell ls
3rdmodem
3rdmodemnvm
3rdmodemnvmbkp
acct
bugreports
cache
charger
config
cust
cust_comm
cust_spec
cust_spec_cfg
d
data
default.prop
dev
dload
etc
hw_odm
hw_oem
hw_preload
log
mnt
odm
oem
patch
patch_hw
preload
proc
product
res
root
sbin
sdcard
splash2
storage
sys
system
vendor
version
ls: ./mnvm2:0: Permission denied
ls: ./modem_fw: Permission denied
ls: ./modem_log: Permission denied
ls: ./modem_secure: Permission denied
ls: ./hisee_fs: Permission denied
ls: ./sec_storage: Permission denied
ls: ./version.prop: Permission denied
ls: ./verity_key: Permission denied
ls: ./ueventd.rc: Permission denied
ls: ./resetFactory.cfg: Permission denied
ls: ./init.zygote64_32.rc: Permission denied
ls: ./init.zygote32.rc: Permission denied
ls: ./init.usb.rc: Permission denied
ls: ./init.usb.configfs.rc: Permission denied
ls: ./init.rc: Permission denied
ls: ./init.environ.rc: Permission denied
ls: ./init: Permission denied
ls: ./fstab.zram768m: Permission denied
ls: ./fstab.zram512m: Permission denied
ls: ./fstab.zram256m: Permission denied
ls: ./fstab.zram2240m: Permission denied
ls: ./fstab.zram1536m: Permission denied
ls: ./fstab.zram1280m: Permission denied
ls: ./fstab.zram1024m: Permission deniedCG 首先必须明确一个条件那就是如果手机系统没有Root过的话是绝对不可以对磁盘进行扇区级操作的。所以第一步请先Root了你的手机或者模拟器吧 ddrescue 电脑恢复数据软件不用付费ddrescue,抢救损坏的硬盘数据,Linux下的软件国产操作系 https://www.gnu.org/software/ddrescue/ https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html sudo apt install gddrescue OPTIONAL : sudo apt-get install ddrescueview ddrescue的一个最大的好处是 mapFile 他可以记录进度即使中断下次在执行这个命令他会检测已恢复的进度并继续恢复,可以通过 ddrescueview 来通过GUI 的方式来查看 mapfile :C/C https://github.com/lich4/DataRecovery TestDisk 是一款功能强大的免费数据恢复软件 Undark - a SQLite recovery tool for deleted data or corrupt database Data recovery for IPFS protocol. :PYTHON Data recovery tools for FATX drives (XBOX and XBOX 360). SQBrite is a data recovery tool for SQLite databases :Rust Simple read only zfs implementation with some simple tools for data recovery. 这是一个用于恢复最终处于不可恢复状态的丢失钱包的工具。如果你把你的种子输入到这个 工具它会导致您的频道在您下次打开钱包时强制关闭。这将使您能够收回资金 从渠道。 用 Rust 编写的 BTRFS 数据恢复工具 ANDROID https://github.com/android-rooting-tools/android_run_root_shell Android-External-Root-Memory-库 嘿我是格兰特。我是一名安全工程师专注于逆向工程和漏洞研究。最近我发现自己花了很多时间在与Android安全相关的主题上。 了解我的学术研究阅读我一些关于杂项主题的不常发表的博客文章查看我的项目索引或查看我的简历以了解有关我的工作经历的更多信息。我的一些爱好包括玩 CTF目前没有团队、系统管理、游戏黑客、计算机图形学和网页设计。 Rooting with root cause: finding a variant of a Project Zero bug Android Root Exploits Abuse Dirty COW Vulnerability Exploiting CVE-2020-0041 - Part 2: Escalating to root
