---
title: Bash
---

[toc]
## Returning exit status
`exit 1`

Code | Meaning 
---  | ---
0    | Success
1    | Error

## Check for Arguments given
```
if [ $# -eq 0 ]; then
    echo "Please supply one argument"
    $(exit 1); echo "$?"
elif [ $# -ge 2 ]; then
    echo "Please give only one argument"
    $(exit 1); echo "$?"
fi
```
## Multiline output
```
cat << EOF
Line 1
Line 2
Line 3
EOF
```
Will output:  
```
Line 1
Line 2
Line 3
```