Add tr command to bash cheatsheet (#1802)
Co-authored-by: Rico Sta. Cruz <rstacruz@users.noreply.github.com>
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bash.md
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bash.md
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@ -709,6 +709,28 @@ printf "This is how you print a float: %f" 2
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#=> "This is how you print a float: 2.000000"
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```
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### Transform strings
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| Command option | Description |
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| ------------------ | --------------------------------------------------- |
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| `-c` | Operations apply to characters not in the given set |
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| `-d` | Delete characters |
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| `-s` | Replaces repeated characters with single occurrence |
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| `-t` | Truncates |
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| `[:upper:]` | All upper case letters |
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| `[:lower:]` | All lower case letters |
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| `[:digit:]` | All digits |
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| `[:space:]` | All whitespace |
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| `[:alpha:]` | All letters |
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| `[:alnum:]` | All letters and digits |
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#### Example
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```bash
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echo "Welcome To Devhints" | tr [:lower:] [:upper:]
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WELCOME TO DEVHINTS
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```
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### Directory of script
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```bash
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