Updated SC2024 (markdown)

koalaman
2017-09-26 16:15:53 -07:00
parent 4695c96711
commit d762506863

@@ -1,12 +1,16 @@
## sudo doesn't affect redirects. Use ..| sudo tee file
## `sudo` doesn't affect redirects. Use `..| sudo tee file`
### Problematic code:
```
sudo echo 'export FOO=bar' >> /etc/profile
```
### Correct code:
```
echo 'export FOO=bar' | sudo tee -a /etc/profile > /dev/null
```
### Rationale:
@@ -18,15 +22,18 @@ There is nothing special about `tee`. It's just the simplest command that can bo
Truncating:
```
echo 'data' | sudo dd of=file
echo 'data' | sudo sed 'w file'
```
Appending:
```
echo 'data' | sudo awk '{ print $0 >> "file" }'
echo 'data' | sudo sh -c 'cat >> file'
```
### Exceptions
If you want to run a command as root but redirect as the normal user, you can ignore this message.
If you want to run a command as root but redirect as the normal user, you can ignore this message.