busybox

, and enabled the sticky bit for the right to use the tmp directory. To ensure that only the user who creates the tmp directory has the right to delete the files. Although embedded Most of the systems are single users, but some embedded applications do not necessarily use root permissions for execution. Therefore It should be designed according to the basic rules of the root file system permission bit. 2. Create a dynamic link library The dynamic link library directly uses the friendly arm, firs

For those who are interested in the android underlying layer, the specific startup process should attract us. However, many startup files have to be pushed to the host by ADB, which is inconvenient. It is strange that the Toolbox provided by Android is too simple. So before getting to know the android startup process, we will install busybox on Android. In this way, there are a lot of tools for us to use. First, go to the

: Specifies a default running level. This item is scanned only when init is called at the beginning. If the rstate field specifies multiple running levels, the maximum number is the default running level. If the rstate field is empty, init considers the field to be 0123456, and then enters Level 6, which leads to a loop, if the inittab file does not contain the initdefault record item, you are requested to specify an initial running level for it at system startup. 4. The process in the process

. The second stage is the detailed tailoring stage. During this phase, the upgraded and cropped kernel will be moved to the system, so that the cropped system can work normally under the linux2.6 kernel. In this phase, the file sharing Function of the virtual machine will no longer be retained. The system backup will be backed up in the first hard disk of the virtual system, the kernel clipping System in the first hard disk copies the backup file to the Windows main system for backup. At this st

a default runlevel, which is scanned only when Init is first called, if the Rstate field specifies multiple RunLevel, where the largest number is the default run level, and if the Rstate field is empty, Init considers the field to be 0123456 and enters level 6 so that it falls into a loop, and if the Inittab file does not contain a record entry that contains Initdefault, ask the user to specify an initial runlevel for it when the system startsa process in a 4.Process field can be any waiting pr

consumption. So we chose devfs. 　　 　　 Busybox 　　 With LILO and kernel image, we will arrange the root file system. Since the flash disk space is only 16 MB, it can be said that this is our biggest challenge. Here, we will first introduce you to BusyBox, a common tool for configuring the root file system in a small embedded Linux system. 　　 Busybox is the famous

author : Wan Jing, the absolute dustReprint Please famous source : http://blog.csdn.net/shulianghan/article/details/36438365Sample code Download :-- CSDN : http://download.csdn.net/detail/han1202012/7639253;-- GitHub : https://github.com/han1202012/TracerouteAndBusybox;1. Principles and Ideasfile permission modification cannot be implemented : If No root privileges , you cannot change the file permissions of a binary file;-- push BusyBox to Android

will install busybox on Android. In this way, there are a lot of tools for us to use. First, go to the busybox homepage to download the source code of the latest version, and then use the arm cross compiler to compile the executable program of busybox. during compilation, pay attention to some setting options, such Build options-> Build

Digest: sha256:1cfcd718fd8a49fec9ef16496940b962e30e3927012e851f99905db55f1f4199 status:downloaded Newer image for Registry:latest [ROOT@LIUMIAOCN ~]# Docker Run creates a private warehouse The best practices mentioned in Registry's introduction suggest that registry be run as a container. [ROOT@LIUMIAOCN ~]# Docker run-d-P 5000:5000 Registry badf822f34751979e4f7fc513b40177f941b227c7385245ad2f391737587b117 [root@liumiaocn ~]# Docker PS CONTAINER ID IMAGE COMMAND

Article Title: how to configure shell functions in uClinux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The uClinux operating system is a branch of standard Linux. It is an operating system specially designed for CPUs without MMU (Storage Management Unit) and has made many small tasks for embedded systems. Currently, common application libraries in uClinu

Port oprofile to Android Port oprofileandroid simulator oprofile Tool compilation referenceHttp://blog.csdn.net/louieuser/article/details/6152175 Tool usage:1. Create an AVD. when starting the simulator, use the compiled kernel to replace the built-in kernel of the SDK.C: \ Users \ maricoliu> emulator @ android2.3-partition-size 300-kernel ~ \ Kernel-qemuNote: To push our program to the system, allocate enough size. Otherwise, the no space left on device error will occur. Use-partition-size to

(a): first the development environment required for the production of the Linux root file system. 1: Porting Linux kernel version: linux-3.0.1 (as long as it is available) 2: Cross-compilation tool: ARM-LINUX-GCC 4.3.2 (optional) 3: File system Production tools: Busybox-1.13.3 (optional) 4:etc.tar.gz (ii): cross-compilation of the environment (this step I have in my blog other articles inside the detailed construction process, very simple ~) (ii

Article Title: proficient in building initramfs stepbystep (3 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 7. What is busybox Busybox is known as the Swiss army knife in Embedded Linux-small and fully functional. It integrates many common Linux commands into a sing

It took me a few hours yesterday and finally made the root file system ~ (1): first, the development environment required for the creation of the Linux root file system. 1: porting linux kernel version: linux-3.0.1 (as long as it can be used) 2: Cross-compilation tool: Arm-Linux-GCC 4.3.2 (optional) 3: file system production tools: Busybox-1.13.3 (optional) 4: etc.tar.gz (2): Build a cross-compilation environment (this step is very simple because I ha

compilation, other concepts (also applicable to INITRD builds) are the same for embedded platforms. Listing 4. Create custom INITRD Tools (Mkird) #!/bin/bash # housekeeping Rm-f/tmp/ramdisk.img rm-f/tmp/ramdisk.img.gz # ramdisk Constants rdsize=4000 BLKSIZE=1 024 # Create A empty RAMDisk image dd If=/dev/zero of=/tmp/ramdisk.img bs= $BLKSIZE count= $RDSIZE # make it a ext2 Moun Table File System/sbin/mke2fs-f-M 0-b $BLKSIZE/tmp/ramdisk.img $RDSIZE # Mount It so we can populat

Linux system, you can use this technology to establish an NFS-based root file system on the host and mount it to an embedded device, so that you can easily modify the content of the root file system. All of the above discussions are based on the memory-based file system of storage devices, which can be used as the root file system of Linux. In fact, Linux also supports logical or pseudo file systems, such as procfs (proc file system), for obtaining system information, and devfs (Device File Sys

For those who are interested in the Android underlying layer, the specific startup process should attract us. However, many startup files have to be pushed to the host by adb, which is inconvenient. It is strange that the Toolbox provided by Android is too simple. So before getting to know the Android startup process, we will install Busybox on Android. In this way, there are a lot of tools for us to use.First, go to the

Transplantation of the yaffs2 File System Editor: The previous file systems are all friendly built-in file systems. The GUI is based on qtopia. This file system has powerful functions. Here we can port a root file system by ourselves, but this is only the most basic system, which helps to understand embedded development. The file system production process is similar, but the production tools used are different. The file system created here mainly refers to the transplantation manual and the book

follows: Software Environment HOST: fc6, virtual machine VMware 6.0 Linux-2.6.19.2 + at91patch U-boot 1.2, busybox1.2.2.1 (or busybox-1.6.1) Hardware environment Motherboard: at91rm9200ek CPU: at91rm9200, 180 MHz (200 MIPS) Memory: 32 m sdram (mt48lc8m16a2) 64 Mbits flash (sst39vf6401b) USB interface: USB-host USB-Device Network Interface: 10/100 m dm9161e Dbgu serial debugging Interface JTAG interfaceUse eldk4.1 to build a cross-compiling environm

First, Introduction Android Linux platform based open source mobile OS. Second, the principle Since Linux, it should support a variety of Linux command line, highly configurable, but the experiment found that Android is a highly castrated version of Linux, many commands are not supported, such as the Rdate command (Network Synchronization Time command). Since I don't support it, I'm not going to get him to support it. Third, BusyBox