diff --git "a/160804107\344\275\225\347\221\236\351\246\250" "b/160804107\344\275\225\347\221\236\351\246\250"
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+exercises 1
+1.touch message.txt
+  mkdir CFY
+  mv message.txt /CFY
+2.cp message.txt /CFY
+3.sudo apt install rsync
+  mkdir empty  //创建目录empty和test
+  mkdir test
+  mv ~/message.txt test
+  mv ~/workbench/message.txt test
+  rsync --delete-before -d empty/ test/  //-delete-before接收者在传输之前进行操作，删除empty和test的文件
+  rmdir empty  //删除空目录empty和test
+  rmdir test
+
+exercise 2
+1.mkdir workbench 
+2.touch workbench/readme.txt
+3.echo -e"1\n2\n3">workbench/readme.txt
+[图片]4.cat workbench/readme.txt
+5.ls -a home
+  command >workbench/List.txt
+6.wc -m workbench/List.txt
+
+
+exercise 3
+1.man ls
+2.man man
+3.apropos calendar
+  man calendar  
+ 
+
+exercise 4   
+1.find . -name "*.png"
+2.find . -name "*hiking*" -delete 
+3.mv test/*.txt data   //假设数据和照片分别以txt和陪你过格式存放于test目录中
+  mv test/*.png photo