# Ubuntu 常用指令 ###### tags: `Ubuntu` ## Permission ### Modified folders permission to 755 ```bash= find . -type d -exec chmod 755 {} + ``` ### Modified files permission to 644 ``` bash= find . -type f -exec chmod 644 {} + ``` ### Delete all specific files in a folder ```bash= find /path/to/folder -maxdepth 1 -type f -name "file" -delete ``` #### Multiple targets ```bash= find /path/to/folder -maxdepth 1 -type d \( -name "file1" -o -name "file2" \) -exec rm -r "{}" \; ``` ```bash= find /path/to/folder -maxdepth 4 -type d -name "*-old" -exec rm -r "{}" \; find public_html -maxdepth 4 -type d -name "updraft/backup_*.zip" -exec rm -r "{}" \; ``` ### Show Block Device ```bash= lsblk ``` ### Mount USB ```bash= sudo mkdir /mnt/usb sudo mount /dev/[Usb] /mnt/usb ``` ### Umount USB ```bash= sudo umount /dev/[Usb] ``` ## Rsync ### Install ```bash= sudo apt-get install rsync ``` ### Rsync Folder ```bash= rsync -avh /path/to/folder [path] ```