TFTP文件传输错误求助：sbin目录缺失in.tftpd文件的解决方法

开发者阿泽

2026-4-23

Hey there, let's work through this TFTP issue together—missing in.tftpd in /sbin is a common hiccup, but we can fix it easily!

First, let's double-check that the file is actually missing. Run these commands in your terminal to confirm:

ls /sbin/in.tftpd
which in.tftpd

If both come back empty, here are the steps to resolve it:

Reinstall the TFTP server package
The exact package name depends on your Linux distribution:
- For Debian/Ubuntu-based systems:
```
sudo apt remove --purge tftpd-hpa
sudo apt update && sudo apt install tftpd-hpa
```
- For CentOS/RHEL-based systems:
```
sudo yum remove tftp-server
sudo yum install tftp-server
```
Reinstalling ensures that all required files (including in.tftpd) are restored to their correct locations.
If in.tftpd is installed but in a different directory
Sometimes the binary might be placed in /usr/sbin instead of /sbin. Check with this command:
```
dpkg -L tftpd-hpa  # For Debian/Ubuntu
rpm -ql tftp-server  # For CentOS/RHEL
```
If you find in.tftpd in /usr/sbin, create a symbolic link to /sbin to fix the path issue:
```
sudo ln -s /usr/sbin/in.tftpd /sbin/in.tftpd
```
Verify and restart the TFTP service
After reinstalling or creating the link, make sure the service is running properly:
- Debian/Ubuntu:
```
sudo systemctl restart tftpd-hpa
sudo systemctl status tftpd-hpa
```
- CentOS/RHEL:
```
sudo systemctl restart xinetd  # Or tftp service depending on your setup
sudo systemctl status xinetd
```
Also, double-check your TFTP configuration file (like /etc/default/tftpd-hpa for Ubuntu or /etc/xinetd.d/tftp for CentOS) to ensure the server path and root directory are correctly set.
Check directory permissions
Don't forget to make sure your TFTP root directory (usually /var/lib/tftpboot) has the right permissions so clients can transfer files:
```
sudo chmod 777 /var/lib/tftpboot
```