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- What is OS and types
- About Unix
- Flavours of Unix
- Architecture of Unix
- What is Shell,Shell types,Kernel and utilities
- Standard Directories
- [date,cal,banner,who,whaoami,passwd,mesg,mail]
- Login and logout procedures
- UNIX File types
- UNIX File creation,deletion and renaming[cat,rm,mv,wc,in,ls]
- [touch,unmask,ulimit]
- File Security,File Access Permissions
- Chmod[Symbolic mode and absolute mode]
- Wild card characters[? and *]
- Input,output and error redirection
- User Types
- [Owners,groups,others]
- Cut, paste, sort, head, tail, grep, tr, tee, wall
- ps,sleep,kill and (background process)
- Basic Arithmetic Commands[expr,bc]
- Creating and Editing files
- Editor types
- Line editor[ed]
- Stream editor[sed]
- Character editor[vi]
- Variables,operators,conditional statements
- Loops,passing arguments to shell programs
- Structure of awk
- Variables,Built-in Operators
- Special Patterns
- Action Statements
- Conditional Statements
- Loops and arrays
- Structure of File system
- Boot Block,Super Block
- Data Block,I-node Block
- File system integrity check
- File system maintenance
- Admin system startup and shutdown process
- Adding and removing user accounts
- Admin basic commands
- Mount,unmount and many more..
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