http://rockhopper.monmouth.edu/cs/jchung/ 2026-05-12T02:22:19+00:00 http://rockhopper.monmouth.edu/cs/jchung/ http://rockhopper.monmouth.edu/cs/jchung/_media/wiki/logo.png text/html 2023-06-13T19:55:25+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_command_line_option_handling?rev=1686686125 Handling Command Line Options (getopts) Most Unix command line utilities we have looked at provide multiple command line options. Some of them, such as tar allow you to flexibly combine command line options to modify command behavior in multiple ways at once. text/html 2024-06-18T06:48:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_file_network_and_version_utilities?rev=1718693324 File, Network and Revision Control Utilities ---------- File Utilities ---------- Batch processing find * find files/directories/named pipes/etc. * See examples here. * -exec option allows running a command on the find results. * Not everything is possible with text/html 2024-05-22T21:26:01+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_introduction_unix_fundamentals?rev=1716413161 Introduction, UNIX Fundamentals ---------- Accessing Your UNIX Account * HH 310 (Linux/Mac Lab), HH 305 (Mac Lab) * Remote access via Internet or LAN * UNIX servers (Linux) * rockhopper.monmouth.edu * plato.monmouth.edu * UNIX lab machines (Linux) text/html 2017-09-26T14:02:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_reading_lines_from_files?rev=1506434564 Reading Lines From Files ---------- Links & references: * Bash FAQ, Question #1 * An askubuntu page on this topic * Bash Internal Field Separator variable * Summarizes the above ---------- While Read The shell read command inputs entire lines. We can do the following to send a file, line by line, to a while read loop: # Non-ideal method. # File we are going to process is represented by $filename. cat $filename | while read line; do echo $line # simple echo of each line don… text/html 2023-06-06T02:25:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_regular_expressions?rev=1686018302 Regular Expressions ---------- Links & references: * <http://linuxreviews.org/beginner/tao_of_regular_expressions> * <http://en.wikipedia.org/wiki/Regular_expressions> * Web tools for testing and learning: * <http://www.regexr.com/> * <http://regexpal.com/> * <https://regexone.com/> ---------- Introduction * To fully utilize shell scripting and certain commands and utilities commonly used in scripts (expr, sed, awk, etc.), you need to know how to use regular expressions. text/html 2024-05-30T22:24:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_shell_scripting?rev=1717107886 More Shell Scripts ---------- * Also see the Advanced Bash Scripting Guide and Bash FAQ. ---------- Writing Shell Scripts Setup * Create the ~/cs370/examples/scripts subdirectory: mkdir -p ~/cs370/examples/scripts * Change to the just-created directory: cd ~/cs370/examples/scripts text/html 2024-06-18T21:42:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_shell_scripts_and_user_interfaces?rev=1718746948 The Shell and User Interfaces ---------- * The shell (and shell scripts) can display simple user interfaces and dialogs for applications that demand them. * zenity and yad can be used to generate GUI dialogs. * whiptail can be used to generate TUI ( text/html 2024-06-24T20:46:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_subshells_and_parallel_processing?rev=1719261969 Subshells and Parallel Processing ---------- * Some information taken the Advanced Bash-Scripting Guide section on subshells (<http://en.tldp.org/LDP/abs/html/subshells.html>) * (Do in class) Setup: $ mkdir -p ~/cs370/examples/subshells_parallel_proc $ cd ~/cs370/examples/subshells_parallel_proc text/html 2024-06-10T20:25:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_text_processing_utilities?rev=1718051102 Text Processing Utilities * Also see “Data Wrangling” section of MIT's Missing Semester course. * The UNIX philosophy is driven by a core set of UNIX text processing utilities that work together to process streams of text. * These text processing utilities are line-based, meaning they process text streams one line at a time. text/html 2024-05-28T20:32:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_unix_shells_and_shell_scripting?rev=1716928374 UNIX Shells and Shell Scripts ---------- UNIX shells The "shell" sits between you and the operating system * a user interface * reads input * translates commands into actions to be taken by the system * acts as a command interpreter * If commands are in a shell script, interprets the shell script. text/html 2024-06-13T19:36:41+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_assignments?rev=1718307401 CS 370 List of Assignments ---------- Collection Setup During the semester, I will collect your homework and projects from your school UNIX home directory. After logging into a lab machine or server, create either a cs370 or se370 directory inside your home directory (~) by running the command: text/html 2024-07-07T07:06:25+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_projects?rev=1720335985 CS 370 List of Projects You will be writing shell scripts for projects. It is suggested that you use the shellcheck command to check your shell script syntax and style. The shellcheck command is installed on all Linux lab machines and Linux servers. ---------- text/html 2008-11-17T19:27:57+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_reading?rev=1226950077 CS 370 - Reading Assignments ---------- Weeks 1-2: Read chapter 1 (“What is UNIX”) and chapter 2 (“UNIX Utilities for Nonprogrammers”) of the book. ---------- Weeks 3-4: Read chapters 4 and 5 on UNIX shells and the Bourne Shell. ---------- text/html 2014-10-28T19:04:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/fortune2png?rev=1414523084 fortune2png Write a script called fortune2png that takes the output of fortune and creates a PNG image file from it (sample). Here is a description in words of how this needs to be done in the script to convert text from fortune to a PNG image: Step 1: Run text/html 2014-10-13T00:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/leet_script_q_and_a?rev=1413160651 Leet script Q & A ---------- <== Back to leet project ---------- * Q: Does the script have to do whole word substitutions? * A: Yes. So “my goodness” would not become “my leetness”. But, “the greater good” would become “teh greater leet”. ---------- text/html 2014-11-04T19:02:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/makeuserids_github_setup?rev=1415127732 Not here text/html 2014-11-01T01:52:47+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/names2userids_script_q_and_a?rev=1414806767 names2userids script Q & A ---------- <== Back to names2userids project ---------- * Q: The input file has thousands of lines, and shell scripts are slow. How can I test my script without the long waits between runs? * A: Use a smaller version of the input file for testing. text/html 2014-11-04T19:02:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/print?rev=1415127744 Not here text/html 2009-09-10T19:25:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/robots?rev=1252610745 User-agent: * Disallow: / text/html 2014-10-06T17:11:42+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/shrinkprint_script_q_and_a?rev=1412615502 Shrinkprint script Q & A ---------- <== Back to shrinkprint project ---------- * Q: Does the shell script have to be designed so that it somehow takes textfile.txt and hh305 as two parameters for use within the pipeline? * A: Yes, textfile.txt would be the first argument to the script, and text/html 2017-12-19T13:21:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/start?rev=1513689704 CS/SE 370 - Program Development Under UNIX Semester: Fall 2017 ---------- Announcements * Final exam, Tuesday, 12/19/2017, 8:30am-11:20am * Sample final exam * The final exam will include a question on your group's Project 3 shell script code. * Quiz 3 will be a take-home quiz from Friday, 12/8 to Monday, 12/11. text/html 2014-12-18T02:13:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs370/ytplay_script_q_and_a?rev=1418868811 ytplay script Q & A ---------- <== Back to ytplay project ---------- * Q: Can I develop/test ytplay on rockhopper? * A: Unfortunately, cclive is not installable on rockhopper at present, so developing ytplay on rockhopper will be severely limited. You can login to opus instead, which does have