DOS and UNIX
DOS and UNIX are two operating systems that are predominantly text based. DOS doesn’t have its own GUI so you are restricted to the command line. In contrast, UNIX can have a GUI just like most Linux variants.
Here are some of the differences and similarities between DOS & UNIX.
1. UNIX vs DOS: Differences
- Number of Users
- DOS is Single-User, UNIX is Multi-User
- Task Processing
- DOS is Single Process, UNIX supports multi-processing, multiple processes per user, and job control from the shell
- Command-Line Interface
- DOS has its command interpreter (command.com). UNIX has the shell (C-shell, Korn Shell, Bourne Shell etc.)
- Security
- Some versions of DOS allow password protection on file. UNIX has username/password for logins, and user/group/world permissions on files and directories.
- Portability
- DOS runs on Intel processors and compatible devices (8088, 8086, 286, 386, 486, Pentium). UNIX is available for a very wide variety of hardware platforms.
- Shell-Level Programming
- DOS has batch files. UNIX has shell scripts.7
- 2. DOS vs UNIX: Similarities
Feature Similarity File System Hierarchical directory structure. File Access Permissions (read, write etc.) on files, programs and directories. Task Input/Output Standard Input, Output and Error channels. Input/output of one task may be connected to another process via "pipe" or redirected to/from file.
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