[root@localhost test]# pwd/data/soft/test[root@localhost test]# ls10.txt  1.txt  2.tx  2.txt  3.txt  4.txt  5.txt  6.txt  7.txt  8.txt  9.txt脚本内容：dir="/data/soft/test/*"for i in $dir;do  b=`echo "$i" | tr -cd "[0-9]"`  echo "$b"done运行结果：[root@localhost ~]# sh test.sh101223456789