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29 lines
802 B
Markdown
29 lines
802 B
Markdown
---
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title: "Permission Denied: Writing to Privileged Locations"
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date: 2022-04-07T20:09:40-04:00
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draft: false
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tags: []
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math: false
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---
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Perhaps you've tried something like the following:
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```bash
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sudo echo "hi" > /etc/test
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```
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Only to receive back an error
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```
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bash: /etc/test: Permission denied
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```
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This is because the `sudo` part only applies to the echo command. Bash which is the process that takes the `"hi"` from the `echo` standard out and writes it to `/etc/test` is still under the unprivileged user.
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Instead consider the following:
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```bash
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echo "hi" | sudo tee /etc/test
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```
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The command `tee` takes whatever is in standard in, and writes it to the filename specified. Since we applied `sudo ` to the `tee` command, it now has the necessary permissions to write to a privileged location.
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