[Linux 常見問題] How does one output bold text in Bash?

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Question
I'm writing a Bash script that prints some text to the screen:

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1. echo "Some Text"  

Can I format the text? I would like to make it bold.

How-To
The most compatible way of doing this is using tput to discover the right sequences to send to the terminal:

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1. bold=$(tput bold)  
2. normal=$(tput sgr0)  

then you can use the variables $bold and $normal to format things:

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1. echo "this is ${bold}bold${normal} but this isn't"  

gives

this is bold but this isn't