Question

编写一个遵循以下算法的shell程序，以获得一个列出名称以3个字符扩展名结尾的所有目录的长列表，并且其权限是用户（所有者）的rwx。

ALGORITHM:
1. Do the same ls command you used in question 2 above, except REDIRECT 
   the ls command's stdout to go into a file named tempFile (instead of 
   the monitor).
2. Use grep to filter the lines of tempFile so that a line is kept ONLY 
   if it corresponds to a DIRECTORY that has rwx permissions for its 
   user (owner).
3. delete (remove) tempFile

到目前为止，我被困在1 i上了：

ls -ld *。??? ＆GT; TEMPFILE

Answer 1

这对我有用：

#! /bin/bash

ls -ld * > tmp   # get a list of the permissions of all directorys in this folder and write it to the tmp file
grep "^drwx" tmp # filter the tmp files for lines beginning with drwx
rm tmp           # remove the file tmp

编写一个shell程序stdout

1 个答案: