趣味Shell

Richard M. Stallman大神是谁就不用说了，一时来了兴趣，想看看Linux系统下有多少程序有这位大神参与编写的。

先把所有命令导出到文件中，遍历所有命令，用man手册查一下并过滤Stallman关键词。

以下是脚本

#!/bin/bash

i=0;

touch Stallman

ls /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /usr/games > command

for line in `cat command`

do

	man $line | grep Richard\ M.\ Stallman

	if [ $? -eq 0 ]

	then

		i=`expr $i + 1`

		echo $i $line >> Stallman

		man $line | grep Richard\ M.\ Stallman >> Stallman

	fi

done

rm command

我的系统是Ubuntu11.04的，查找到以下程序。

1 cat

       Written by Torbjorn Granlund and Richard M. Stallman.

2 dir

       Written by Richard M. Stallman and David MacKenzie.

3 ls

       Written by Richard M. Stallman and David MacKenzie.

4 rm

       Written by Paul Rubin, David MacKenzie, Richard M. Stallman, and Jim Meyering.

5 vdir

       Written by Richard M. Stallman and David MacKenzie.

6 comm

       Written by Richard M. Stallman and David MacKenzie.

7 gdb

       `gdb'  entry  in  info;  Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H.

8 gdbtui

       `gdb'  entry  in  info;  Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H.

9 split

       Written by Torbjorn Granlund and Richard M. Stallman.

10 tee

       Written by Mike Parker, Richard M. Stallman, and David MacKenzie.

11 uniq

       Written by Richard M. Stallman and David MacKenzie.

巴特西

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