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Adnan Ahmed 2017-04-01 12:44:11 +04:00 committed by GitHub
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README.md
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@ -1,3 +1,19 @@
## Table of Contents
1. [Bash Basics](#1-bash-basics)
1. [File Commands](#11-file-commands)
1. [Directory Commands](#12-directory-commands)
1. [SSH, System Info & Network Commands](#13-ssh-system-info--network-commands)
1. [Basic Shell Programming](#2-basic-shell-programming)
1. [Variables](#21-variables)
1. [String Substitution](#22-string-substitution)
1. [Functions](#23-functions)
1. [Conditionals](#24-conditionals)
1. [Loops](#25-loops)
1. [Process Handling](#3-process-handling)
1. [Tricks](#4-tricks)
1. [Debugging](#5-debugging)
This is first line that you will in bash script files called `shebang`. The shebang line in any script determines the script's ability to be executed like an standalone executable without typing sh, bash, python, php etc beforehand in the terminal.
```
@ -514,7 +530,7 @@ ${variable//pattern/string} # the longest match to pattern in variable is replac
${#varname} # returns the length of the value of the variable as a character string
```
## 2.3. Functions.
## 2.3. Functions
As in almost any programming language, you can use functions to group pieces of code in a more logical way or practice the divine art of recursion. Declaring a function is just a matter of writing function my_func { my_code }. Calling a function is just like calling another program, you just write its name.
Syntax:
@ -650,7 +666,7 @@ kill PID # terminates process with specified PID
ps # prints a line of information about the current running login shell and any processes running under it
ps -a # selects all processes with a tty except session leaders
# 4. Tips and Tricks
# 4. Tricks
## set an alias
Open `bash_profile` by running following command `nano ~/.bash_profile`
@ -664,8 +680,7 @@ source ~/.bashrc
cd hotellogs
# 5. Debugging Shell Programs
# 5. Debugging
You can easily debug the bash script by passing different options to `bash` command. For example `-n` will not run commands and check for syntax errors only. `-v` echo commands before running them. `-x` echo commands after command-line processing.
Syntax:
@ -674,7 +689,6 @@ bash -n scriptname
bash -v scriptname
bash -x scriptname
```
## Feedback
# Feedback
Suggestions/improvements
[welcome](https://github.com/idnan/lord-of-terminal/issues)!