sco xenix

; mmap memory-mapped device; pd parent directory; rtd root directory; tr kernel trace file (OpenBSD ); txt program text (code and data ); V86 VP/ix mapped file; the File Descriptor number display mode of the file is: reference r for read access; w for write access; u for read and write access; N for a Solaris NFS lock of unknown type; r for read lock on part of the file; R for a read lock on the entire file; w for a write lock on part of the file; W for a write lock on the entire file; u for a r

standard input(17) 2: standard error indicationGenerally after standard output, standard error, standard input followed by file state mode: R, W, u, etc.(1) U: Indicates that the file is open and in read/write mode(2) R: Indicates that the file is open and is in read-only mode(3) W: Indicates that the file is open and is in(4) Space: Indicates that the file's status mode is Unknow and is not locked(5)-: Indicates that the file's state mode is unknow and is lockedAt the same time, after the file

)-: Indicates that the file's state mode is unknow and is lockedAt the same time, after the file state mode, followed by the relevant lock(1) n:for a Solaris NFS lock of unknown type;(2) R:for read lock on part of the file;(3) R:for A read lock on the entire file;(4) W:for a write lock on part of the file;(5) W:for A write lock on the entire file; (write lock for entire file)(6) U:for a read and write lock of any length;(7) U:for a lock of unknown type;(8) x:for an

that the file is open and is in read-only mode(3) W: Indicates that the file is open and is in(4) Space: Indicates that the file's status mode is Unknow and is not locked(5)-: Indicates that the file's state mode is unknow and is lockedAt the same time, after the file state mode, followed by the relevant lock(1) n:for a Solaris NFS lock of unknown type;(2) R:for read lock on part of the file;(3) R:for A read lock on the entire file;(4) W:for a write lock on part of the file;(5) W:for A write lo

Xenix lock in part of the file; (9) x:for an SCO openserver Xenix lock on the entire file; (space:if) There is no lock. Type: File types, such as Dir, Reg, etc., common file types (1) DIR: Indicates directory (2) CHR: denotes character type (3) BLK: Block device type (4) Unix:unix domain sockets (5) FIFO: Advanced First Ou

input followed by file state mode: R, W, u, etc.(1) U: Indicates that the file is open and in read/write mode(2) R: Indicates that the file is open and is in read-only mode(3) W: Indicates that the file is open and is in(4) Space: Indicates that the file's status mode is Unknow and is not locked(5)-: Indicates that the file's state mode is unknow and is lockedAt the same time, after the file state mode, followed by the relevant lock(1) n:for a Solaris NFS lock of unknown type;(2) R:for read loc

lights of these devices and determine whether a hardware fault has occurred. Generally, a small fault occurs. After the device is switched OFF and restarted, most of them will be automatically ruled out.Most real problems need to be solved by the vendor. That is to say, the key to getting started is to master the host system that accounts for 1/5 of the total, so that you can easily deal with them.Of course, you may make some configuration changes on the switch and routing devices, but that is

1. Log in to Linux and download the RZSZ installation packagewget http://freeware.sgi.com/source/rzsz/rzsz-3.48.tar.gz2.tar ZXVF rzsz-3.48.tar.gz Unzip the installation package3. After extracting the SCR directory, this software installation is different from the conventional GNU software-no Configure (config) and make install (installation process). Execute command make before giving the following hint:Please study the #ifdef's in CRCTAB.C, RBSB.C, rz.c and SZ.C,Make any necessary hacks for odd

How to install Rzsz under Linux1. Log in to Linux and download the RZSZ installation packagewget http://freeware.sgi.com/source/rzsz/rzsz-3.48.tar.gz2.tar ZXVF rzsz-3.48.tar.gz Unzip the installation package3. After extracting the SCR directory, this software installation is different from the conventional GNU software-no Configure (config) and make install (installation process). Execute command make before giving the following hint:Please study the #ifdef's in CRCTAB.C, RBSB.C, rz.c and SZ.C,M

Informix is a large database management system with advanced technology, performance and reliability, widely used in a wide range of applications worldwide, including government, financial insurance, postal telecommunications, manufacturing and retail and other important industries or areas. Based on the author's experience of using INFORMIX-4GL and Informix-sql in SCO Unix/xenix, this paper briefly introdu

file systemDevpts/dev/ptsVirtual file systemExt2 LinuxLocal EXT2 File system Isofs ISO9660File System (CD-ROM)NfsNetwork File System (NFS)NfsdIntegrated Network File System serverFatGeneric code for FAT-based file systemsMsdosMS-DOS file system for MicrosoftVfatMicrosoft's Windows file System (VFAT)NlsLocal language supportNtfsMicrosoft's Windows NT file systemSmbfsMicrosoft Windows Server Message Block (SMB) file systemUmsdos UmsdosFile system Minix MinixFile systemHPFS IBMThe Os/2 file system

Tags: switch enable hash table Permissions command img software Large serviceOne: the generation and development of Linux1. In 1946 the University of Pennsylvania produced the first computer Eniarc. Operation 5,000 times per second but still defective. First, the user exclusive whole machine, resource utilization is low. Second CPU to wait for manual operation, CPU utilization is not sufficient.2. Compatible time-sharing system and keyboard display and other terminals produce greatly improve the

Processing Tools: programs used to generate a compressed kernel Image Alpha Compaq's Alpha Architecture S390 IBM System/390 Architecture The structure of the system Sparc64 Sun's Ultra-iSCSI Architecture Mips SGI Architecture Ppc-IBM PowerPC-based architecture M68k Motorola Architecture Based on MC680x0 Arm-based ARM processor architecture Fs File System Proc/proc Virtual File System Devpts/dev/pts Virtual File System Ext2 Linux local Ext2 File System Isofs ISO9660 File System (CD-ROM) Nfs Netw

Most of the Business Systems of the financial system are UNIX/XENIX Operating Systems and TCP/IP network platforms. The author takes sco unix 3.2V4.2 as an example to discuss how to enhance the security management of UNIX network systems. The security mentioned here mainly refers to protecting the information reliability and normal operation of the system by preventing illegal intrusion and access from the

Unix SystemIn, some programs use the systemRootProcess running. These programs do not always have suid permission, because many of them only run by the root, the system administrator needs to know what these programs are doing and what other programs these programs will run. (1) Start the system When some unix systems (such as sco unix/xenix) are started, they are run in a way called a single user. In this

architectures.Every major computer vendor has ever implemented its own UNIX. Even Microsoft once owned a product called XENIX, which was later sold to SCO (no longer exists).You can click and enlarge to see this picture to better understand this "family". (Note: The larger image cannot be viewed on the phone)UNIX essentially has three main branches:The first branch is "System V" UNIX, and now we know of IB

? MacWrite ? ResEdit ? Shake ? iwork.com ? Logic Express Unix and Unix-like operating systems UNIX System v family ? A/ux ? AIX ? HP-UX ? IRIX ? LynxO

ISO9660File System (CD-ROM)NfsNetwork File System (NFS)NfsdIntegrated Network File System serverFatGeneric code for FAT-based file systemsMsdosMS-DOS file system for MicrosoftVfatMicrosoft's Windows file System (VFAT)NlsLocal language supportNtfsMicrosoft's Windows NT file systemSmbfsMicrosoft Windows Server Message Block (SMB) file systemUmsdos UmsdosFile systemMinix MinixFile systemHPFS IBMThe Os/2 file systemSysV SYSTEMV, SCO,

** linux的产生**1. In 1946 the University of Pennsylvania produced the first computer Eniarc. Operation 5,000 times per second but still defective. First, the user exclusive whole machine, resource utilization is low. Second CPU to wait for manual operation, CPU utilization is not sufficient.2. Compatible time-sharing system and keyboard display and other terminals produce greatly improve the performance of the computer. In 1965, Mutics plans to allow large hosts to support more than 300 termin

-bsrg system,> virtual memory, TCP/IP, Shell 1978, BSD, UNIX, SCO 1980 Microsoft, Bill, XENIX system-Unix Bell, split, 4 W, BSD PC 3 W CP/M system, 2 W 4 weeks, Bill --> DoS IBM, PC, intel X86 CPU Apple, jobs, BSD, PPC-CPU M68K-CPU Sell bell-> Novell, NetWare Bsd4.3 --> bsd4.3lite (OpenBSD, NetBSD, FreeBSD) Commercial Unix Version Sun: SunOS system-Unix-> Solaris System (ultrasparc) IBM: AIx System (power,