1. Chapter 9 Basic File Processing

2. Displaying File Contents cat, cat w/append tac nl pr more less head tail

3. Table 9.1 Some Useful less Commands

4. Table 9.1 More less Commands

5. File Location Commands cp mv ln rm mkdir rmdir

6. Figure 9.1 Current directory before and after command cp temp temp.bak

7. Figure 9.2 Current directory before and after command mv temp backups/temp.old

8. Figure 9.3 Current directory before and after command rm temp backups/temp.old

9. File Statistics Commands ls –l wc

10. Comparing Files cmp, zcmp diff, zdiff – Output is a set of commands that can be used with the ed (or vi) editor to convert the first file into the second file – Often used to send out upgrades

11. Table 9.2 File Conversion Instructions Produced by diff

12. Removing Repeated Lines uniq command Intended for use on sorted files Produces an output file with only one copy of any repeated consecutive lines

13. Table 9.3 Printing