Checking words in a list for validity 16-21.
Looking up definitions in Webster's 1913 Dictionary 16-20. Using tail to monitor the system log 16-16. Generating 10-digit random numbers 16-15. Copying files in current directory to another 16-7. Logfile: Using xargs to monitor system log 16-6. In current directory containing bad characters and whitespace. Using ls to create a table of contentsįor burning a CDR disk 16-2. Waiting for a process to finish before proceeding 15-27. A (useless) script that sources itself 15-24. Options/arguments passed to a script 15-22. Using export to pass a variable to anĮmbedded awk script 15-21. Reassigning the positional parameters 15-19. Reversing the positional parameters 15-18. Using eval to selectĬommand-line parameters 15-14. Changing the current working directory 15-10. A script that spawns multiple instances of itself 15-2. Using continue N in an actual task 11-25. Breaking out of multiple loop levels 11-23. Effects of break andĬontinue in a loop 11-22. while loop with multiple conditions 11-18. Symbolic links in a directory, saved to a file 11-13. Checking all the binaries in a directory for Missing in in aĪ for loop with command substitution 11-8. Operating on a parameterized file list 11-5. Fileinfo: operating on a file listĬontained in a variable 11-4. Matching patterns at prefix or suffix of string 11-1. Using pattern matching to parse arbitrary strings 10-13. Pattern matching in parameter substitution 10-11. Parameter substitution and "usage" messages 10-9. Using parameter substitution and error messages 10-8. Alternate ways of extracting and locating substrings 10-7. Converting graphic file formats, with filename change 10-4. Inserting a blank line between paragraphs in a text file 10-2.
Representation of numerical constants 8-5. Compound Condition Tests Using & and || 8-4. Variable Assignment, plain and fancy 4-4. Variable assignment and substitution 4-2. Backup of all files changed in last day 4-1. Saving the output of a code block to a file 3-3. cleanup: An improved clean-upĪnd generalized version of above scripts. cleanup: A script to clean up logįiles in /var/log 2-2. Converting DOS Batch Files to Shell Scripts O. An Introduction to Programmable Completion K. A Detailed Introduction to I/O and I/O Redirection G. System and Administrative Commands Part 5. External Filters, Programs and Commands 17. Introduction to Variables and Parameters 5.
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