wiki-grav/pages/04.other/14.bash/default.en.md

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---
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
```