diff --git a/lab1/10215501437.sh b/lab1/10215501437.sh
new file mode 100644
index 0000000..8e79b32
--- /dev/null
+++ b/lab1/10215501437.sh
@@ -0,0 +1,15 @@
+#!/bash/bin
+#生成随机字符串
+for i in `seq 1000`;do echo $RANDOM | md5sum | cut -c 1-9 ;done > test.txt
+#按照字母顺序排列，输出unique行
+sort -u test.txt | uniq
+#按照数字顺序排列，输出unique行
+sort -u -n test.txt | uniq
+#以覆盖写的方式重定向到一个文件
+sort -u test.txt | uniq > ans1
+sort -u -n test.txt | uniq > ans1
+#以追加写的方式重定向到一个文件
+sort -u test.txt | uniq >> ans1
+sort -u -n test.txt | uniq >> ans1
+#寻找to
+grep -wo "to" test2.txt | wc-l