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bash-guide
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~/bin directory to access scripts easily and keeping environment variables. (#49) 

* keeping environment variables.

Useful way to keep the environment variables.

* Add a ~/bin directory to access scripts easily

Useful way to access yours scripts easily.
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João Freires 2017-04-24 16:52:41 -03:00 committed by Adnan Ahmed
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@ -1139,6 +1139,25 @@ function finish {
trap finish EXIT
```
## Saving your environment variables
When you do `export FOO = BAR`, your variable is only exported in this current shell and all its children, to persist in the future you can simply append in your `~/.bash_profile` file the command to export your variable
```bash
echo export FOO=BAR >> ~/.bash_profile
```
## Accessing your scripts
You can easily access your scripts by creating a bin folder in your home with `mkdir ~/bin`, now all the scripts you put in this folder you can access in any directory.
If you can not access, try append the code below in your `~/.bash_profile` file and after do `source ~/.bash_profile`.
```bash
# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
PATH="$HOME/bin:$PATH"
fi
```
# 4. 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.