# Compression, packaging and backup of files and file systems ###### tags: `compression` # Packaging 打包 tar 多個檔案或目錄包成一個大檔案的指令 ``` #打&壓 tar -czvf myetc.tar.gz /etc #解 tar -xzvf myetc.tar.gz ``` c 打包 x 解包 -z ：透過 gzip 的支援進行壓縮/解壓縮：此時檔名最好為 *.tar.gz -v ：在壓縮/解壓縮的過程中，將正在處理的檔名顯示出來！ -f filename：-f 後面要立刻接要被處理的檔名！建議 -f 單獨寫一個選項 --- ### 增量壓縮 tar cvfz create verbose filename zip ![](https://i.imgur.com/Sui9D0O.png) timeStamp ``` [root@meowhecker centos]# mkdir backup [root@meowhecker centos]# cd backup/ [root@meowhecker backup]# touch file1 file2 file3 [root@meowhecker backup]# ls file1 file2 file3 [root@meowhecker backup]# tar cvfz backupMeow.tar.gz ./* ./file1 ./file2 ./file3 ``` Record update time ``` touch timeStamp ``` ``` find -type f -cnewer timeStamp ./file1 ./file4 ``` ``` tar cvfz backupMeow-2.tar.gz `find -type f -cnewer timeStamp` ./file1 ./file4 ``` 解壓 unzip ``` tar xvfz backupMeow.tar.gz ``` ``` tar xvfz backupMeow-2.tar.gz ```