Differences

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--- skill-tree:use:1:1:b [2020/07/05 13:11] – external edit 127.0.0.1
+++ skill-tree:use:1:1:b [2021/09/13 11:57] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 At its core, a shell is simply a convenient tool that you can use to execute commands on a Linux computer.
 The shell provides a textual interface allowing to interact with the operating system and performing all possible operations, i.e., accessing and manipulating files, and running programs.
+However, there are various misconceptions that new users typically face when handling a shell such as the Bash.
+Particularly, dealing with control characters and the format expected when executing programs with arguments can be error-prone.
+Part of this skill is the general principles of the interaction with a shell, to execute and to stop programs.
-Part of this module is the general principles of the interaction with a shell. They are illustrated on the widely available bash shell.
 # Aim
   * To describe the key principles of a shell.
-  * To execute basic programs and manipulate their input/output.
+  * To execute basic programs to query system information and manipulate the system status.
-  * To login remotely with public key authentication.
-  * To use text editors (first steps).
 # Outcomes
-  * Utilize the bash shell to execute individual programs with arguments
+  * Utilize the bash shell to execute individual programs with arguments.
-  * Describe the meaning of the exit code of a program
+  * Describe the meaning of the exit code of a program.
-  * Run multiple programs after another depending on the exit code ;, &&, ||
+  * Run multiple programs after another depending on the exit code ;, &&, ||.
   * List the set of basic programs and their tasks:
-    - pwd
+    * pwd
-    - whoami
+    * whoami
-    - sleep
+    * sleep
-    - kill
+    * kill
-    - echo
+    * echo
-    - clear
+    * clear
-    - man
+    * man
-    - exit
+    * vi, vim, emacs, nano
-  * Utilize the available help of a program (--help argument and the man pages)
+    * exit
-  * Interrupt or abort a program execution
+  * Utilize the available help of a program (--help argument and the man pages).
-    - CTRL-C
+  * Interrupt or abort a program execution:
-    - CTRL-Z
+    * CTRL-C
-    - using kill -9
+    * CTRL-Z
-  * Use the shell history to search and execute previous executed commands
+    * using kill -9
-  * Identify potential special characters that must be handled with care
+  * Use the shell history to search and execute previously executed commands.
-  * Utilize escaping to ensure correct handling of arguments
+  * Set and print shell variables.
-  * Understand wildcard characters to select a group of files/directories
+  * Print all currently set variables
-    - *
+  * Identify potential special characters that must be handled with care.
-    - [,-]
+    * List strings that could refer to files/directories
-  * Use text editors
+  * Utilize escaping to ensure correct handling of arguments.
+  * Understand wildcard characters to select a group of files/directories:
+    * *
+    * ?
+    * [-,]
+  * How to close popular command line text editors with/or without saving changes:
+    * nano
+    * vi
+    * emacs
 # Subskills
+  * [[skill-tree:use:1:1:i]]