pry rescue

Rescue is a mechanism for handling exceptions in monorail.In Asp.net or Java development, we need to handle exceptions, that is, when exceptions occur, jump to an error page. In the past, we used to define a method to handle exceptions automatically. In monorail, a ready-made mechanism is provided to handle exceptions. The usage is simple. You only need to add a rescue attribute.Let's take a look at the si

From a production accident-linux single-user mode, rescue mode, and so on With the emergence of the bash vulnerability, the largest security vulnerability in linux this year, our company also began to fix the vulnerability. If there are more than one machine, it is prone to problems, A 64-bit linux Server accidentally upgrades the 32-bit bash rpm. Because of the root, oracle users log on through/bin/bash by default, this causes the user to be unable t

The solution is as follows:1. Enter LS at the Grub rescue> prompt to see that the command lists all partitions on the hard disk, find the partition with Linux installed, my installation is under (HD0,MSDOS8), so I take (HD0,MSDOS8) as an example, msdos can omit to write, such as (hd0,8);2. Enter set root= (hd0,8) at the Grub rescue> prompt3. Enter Ls/boot/grub/i386-pc/normal.mod at the Grub

L2-1. Emergency response time limit of MSMemory Limit 65536 KBCode length limit 8000 BProcedures for the award of questions StandardAuthor ChenAs the head of a city's emergency rescue team, you have a special national map. The map shows a number of scattered cities and some quick roads connecting the city. The number of rescue teams in each city and the length of each fast road connecting two cities are mar

CentOS 5.11 enters rescue mode I recently studied centos5.11, but I don't know what's going on. I restarted the system once, and the system failed to start normally. I tried it for half a day and said it was about to enter the rescue mode. I am a newbie, I have introduced more than 6 Versions online ,. I don't know how to do this! Afterwards, I finally turned to a book about the introduction, 1. First, e

-wmp_4-s_3753139033.png "title=" 1.3.png "alt=" 4edf0b841d99cf6eb7dbf370429d0412.png-wh_ "/>system boot into single user mode, enter "chroot/sysroot/", then enter "lang=en"(Note case, this setting avoids garbled characters)650) this.width=650; "Src=" Https://s2.51cto.com/oss/201710/19/dd3ab370b31ab09a18a3ed1fb45ebaed.png-wh_500x0-wm_3 -wmp_4-s_3026361019.png "style=" Float:none; "title=" 1.4.png "alt=" Dd3ab370b31ab09a18a3ed1fb45ebaed.png-wh_ "/>Enter "passwd" to reset the password, then enter

Linux rescue mode is widely used when Linux encounters some configuration files, such as kernel problem/fstab, and disk fsck error and so on when the system cannot start. This eliminates the complex and time-consuming task of reloading our systems and architectures. Here is a demonstration of the process, I hope for the future work will be helpful. Experiment Description: A computer because Xen kernel and selinux conflict, not be accepted by compute

Tags: rmi key ade iOS path VPD sel power is completeFour, emergency mode, rescue mode, clone virtual machine, Linux machine Mutual LoginFirst, emergency mode (CENTOS6 and previously called single-user mode)You need to operate on a physical machine and cannot operate remotely.If the grub password is not set.1. Rebooting the systemRestart command: Reboot,init 6,shutdown-r now.Shutdown: Init 0,poweroff.On the Start screen, press the arrow key, select the

CentOS 6 System Rescue modeLinux学习笔记王振中M21马克飞象 After learning about the CentOS 5, 6 system start-up process and troubleshooting, the following destructive attempts were made to deepen the impression. try to repair the system after deleting the/boot directory and the/etc/fstab file 1. First step is to delete the/boot directory and/etc/fstab Delete/boot/etc/fstab You can see that although the boot directory canno

After the notebook with ubuntu14.04 and Windows 7 is started, the grub rescue> prompt appears, and the grubrescue of both systems appears. The solution is as follows: 1. enter ls at the grub rescue> prompt and you will see that this command lists all the partitions on the hard disk. Find the partition where linux is installed. My installation is under (hd0, msdos8, therefore, for example (hd0, msdos8), ms

Rescue and recovery pilot Manager Control (bmgr32) The command line interface of the Boot manager is bmgr32. It is located in the directory c:/ibmtools/utils. The following table shows the bmgr32 switch and result.Bmgr32 switch result/B0 boot to partition 0 (based on the order in the partition table)/B1 boot to partition 1/B2 boot to partition 2/B3 boot to partition 3/BS boot to IBM service Partition/BW boot to r