在shell脚本编写中,时常会用到对文件的相关操作,比如增加内容,修改内容,删除部分内容,查看部分内容等,但是上述举例的这些操作一般都是需要在文本编辑器中才能操作,常用的文本编辑器如:gedit、vim、nano等又是交互式文本编辑器,脚本无法自己独立完成,必须有人参与才可以完成。如果这样的话又违背了我们编写脚本的意愿(全部由机器来完成,减少人的工作压力,提升工作效率)。emm…如何才能让这些操作全部脚本自己就搞定,而不需要人的参与,而且又能按照我们的脚本预案来完成呢?
为了解决上述问题,linux为大家提供了一些命令,比如Perl、sed等命令,今天我就着重为大家介绍一下sed命令。

一、sed介绍

sed是linux中提供的一个外部命令,它是一个行(流)编辑器,非交互式的对文件内容进行增删改查的操作,使用者只能在命令行输入编辑命令、指定文件名,然后在屏幕上查看输出。它和文本编辑器有本质的区别。
区别是: 文本编辑器: 编辑对象是文件 行编辑器:编辑对象是文件中的行
也就是前者一次处理一个文本,而后者是一次处理一个文本中的一行。这个是我们应该弄清楚且必须牢记的,否者可能无法理解sed的运行原理和使用精髓。
sed数据处理原理
23-shell对文件的操作 - 图1

二、sed语法

sed 命令语法:
sed [options] ‘{command}[flags]’ [filename]

  1. #命令选项
  2. -e script 将脚本中指定的命令添加到处理输入时执行的命令中 多条件,一行中要有多个操作
  3. -f script 将文件中指定的命令添加到处理输入时执行的命令中
  4. -n 抑制自动输出
  5. -i 编辑文件内容
  6. -i.bak 修改时同时创建.bak备份文件。
  7. -r 使用扩展的正则表达式
  8. ! 取反 (跟在模式条件后与shell有所区别)
  9. #command 对文件干什么
  10. sed常用内部命令
  11. a 在匹配后面添加
  12. i 在匹配前面添加
  13. d 删除
  14. s 查找替换 字符串
  15. c 更改
  16. y 转换 N D P
  17. p 打印
  18. #flags
  19. 数字 表示新文本替换的模式
  20. g 表示用新文本替换现有文本的全部实例
  21. p 表示打印原始的内容
  22. w filename: 将替换的结果写入文件

2.1)sed内部命令说明

演示实例文档

  1. [root@zutuanxue ~]# cat data1
  2. 1 the quick brown fox jumps over the lazy dog.
  3. 2 the quick brown fox jumps over the lazy dog.
  4. 3 the quick brown fox jumps over the lazy dog.
  5. 4 the quick brown fox jumps over the lazy dog.
  6. 5 the quick brown fox jumps over the lazy dog.

文件内容增加操作,将数据追加到某个位置之后,使用命令a。
演示案例

  1. data1的每行后追加一行新数据内容: append data "haha"
  2. [root@zutuanxue ~]# sed 'a\append data "haha"' data1
  3. 1 the quick brown fox jumps over the lazy dog.
  4. append data "haha"
  5. 2 the quick brown fox jumps over the lazy dog.
  6. append data "haha"
  7. 3 the quick brown fox jumps over the lazy dog.
  8. append data "haha"
  9. 4 the quick brown fox jumps over the lazy dog.
  10. append data "haha"
  11. 5 the quick brown fox jumps over the lazy dog.
  12. append data "haha"
  13. 在第二行后新开一行追加数据: append data "haha"
  14. [root@zutuanxue ~]# sed '2a\append data "haha"' data1
  15. 1 the quick brown fox jumps over the lazy dog.
  16. 2 the quick brown fox jumps over the lazy dog.
  17. append data "haha"
  18. 3 the quick brown fox jumps over the lazy dog.
  19. 4 the quick brown fox jumps over the lazy dog.
  20. 5 the quick brown fox jumps over the lazy dog.
  21. 在第二到四行每行后新开一行追加数据: append data "haha"
  22. [root@zutuanxue ~]# sed '2,4a\append data "haha"' data1
  23. 1 the quick brown fox jumps over the lazy dog.
  24. 2 the quick brown fox jumps over the lazy dog.
  25. append data "haha"
  26. 3 the quick brown fox jumps over the lazy dog.
  27. append data "haha"
  28. 4 the quick brown fox jumps over the lazy dog.
  29. append data "haha"
  30. 5 the quick brown fox jumps over the lazy dog.
  31. 匹配字符串追加: 找到包含"3 the"的行,在其后新开一行追加内容: append data "haha"
  32. [root@zutuanxue ~]# sed '/3 the/a\append data "haha"' data1
  33. 1 the quick brown fox jumps over the lazy dog.
  34. 2 the quick brown fox jumps over the lazy dog.
  35. 3 the quick brown fox jumps over the lazy dog.
  36. append data "haha"
  37. 4 the quick brown fox jumps over the lazy dog.
  38. 5 the quick brown fox jumps over the lazy dog.
  39. //开启匹配模式 /要匹配的字符串/

文件内容增加操作,将数据插入到某个位置之前,使用命令i。
演示案例

  1. data1的每行前插入一行新数据内容: insert data "haha"
  2. [root@zutuanxue ~]# sed 'i\insert data "haha"' data1
  3. insert data "haha"
  4. 1 the quick brown fox jumps over the lazy dog.
  5. insert data "haha"
  6. 2 the quick brown fox jumps over the lazy dog.
  7. insert data "haha"
  8. 3 the quick brown fox jumps over the lazy dog.
  9. insert data "haha"
  10. 4 the quick brown fox jumps over the lazy dog.
  11. insert data "haha"
  12. 5 the quick brown fox jumps over the lazy dog.
  13. 在第二行前新开一行插入数据: insert data "haha"
  14. [root@zutuanxue ~]# sed '2i\insert data "haha"' data1
  15. 1 the quick brown fox jumps over the lazy dog.
  16. insert data "haha"
  17. 2 the quick brown fox jumps over the lazy dog.
  18. 3 the quick brown fox jumps over the lazy dog.
  19. 4 the quick brown fox jumps over the lazy dog.
  20. 5 the quick brown fox jumps over the lazy dog.
  21. 在第二到四行每行前新开一行插入数据: insert data "haha"
  22. [root@zutuanxue ~]# sed '2,4i\insert data "haha"' data1
  23. 1 the quick brown fox jumps over the lazy dog.
  24. insert data "haha"
  25. 2 the quick brown fox jumps over the lazy dog.
  26. insert data "haha"
  27. 3 the quick brown fox jumps over the lazy dog.
  28. insert data "haha"
  29. 4 the quick brown fox jumps over the lazy dog.
  30. 5 the quick brown fox jumps over the lazy dog.
  31. 匹配字符串插入: 找到包含"3 the"的行,在其前新开一行插入内容: insert data "haha"
  32. [root@zutuanxue ~]# sed '/3 the/i\insert data "haha"' data1
  33. 1 the quick brown fox jumps over the lazy dog.
  34. 2 the quick brown fox jumps over the lazy dog.
  35. insert data "haha"
  36. 3 the quick brown fox jumps over the lazy dog.
  37. 4 the quick brown fox jumps over the lazy dog.
  38. 5 the quick brown fox jumps over the lazy dog.

文件内容修改操作–替换,将一行中匹配的内容替换为新的数据,使用命令s。
演示案例

  1. 从标准输出流中做替换,将test替换为text
  2. [root@zutuanxue ~]# echo "this is a test" |sed 's/test/text/'
  3. this is a text
  4. data1中每行的dog替换为cat
  5. [root@zutuanxue ~]# sed 's/dog/cat/' data1
  6. 1 the quick brown fox jumps over the lazy cat.
  7. 2 the quick brown fox jumps over the lazy cat.
  8. 3 the quick brown fox jumps over the lazy cat.
  9. 4 the quick brown fox jumps over the lazy cat.
  10. 5 the quick brown fox jumps over the lazy cat.
  11. data1中第二行的dog替换为cat
  12. [root@zutuanxue ~]# sed '2s/dog/cat/' data1
  13. 1 the quick brown fox jumps over the lazy dog.
  14. 2 the quick brown fox jumps over the lazy cat.
  15. 3 the quick brown fox jumps over the lazy dog.
  16. 4 the quick brown fox jumps over the lazy dog.
  17. 5 the quick brown fox jumps over the lazy dog.
  18. data1中第二到第四行的dog替换为cat
  19. [root@zutuanxue ~]# sed '2,4s/dog/cat/' data1
  20. 1 the quick brown fox jumps over the lazy dog.
  21. 2 the quick brown fox jumps over the lazy cat.
  22. 3 the quick brown fox jumps over the lazy cat.
  23. 4 the quick brown fox jumps over the lazy cat.
  24. 5 the quick brown fox jumps over the lazy dog.
  25. 匹配字符串替换:将包含字符串"3 the"的行中的dog替换为cat
  26. [root@zutuanxue ~]# sed '/3 the/s/dog/cat/' data1
  27. 1 the quick brown fox jumps over the lazy dog.
  28. 2 the quick brown fox jumps over the lazy dog.
  29. 3 the quick brown fox jumps over the lazy cat.
  30. 4 the quick brown fox jumps over the lazy dog.
  31. 5 the quick brown fox jumps over the lazy dog.

文件内容修改操作–更改,将一行中匹配的内容替换为新的数据,使用命令c。
演示案例

  1. data1文件中的所有行的内容更改为: change data "data"
  2. [root@zutuanxue ~]# sed 'c\change data "haha"' data1
  3. change data "haha"
  4. change data "haha"
  5. change data "haha"
  6. change data "haha"
  7. change data "haha"
  8. data1文件第二行的内容更改为: change data "haha"
  9. [root@zutuanxue ~]# sed '2c\change data "haha"' data1
  10. 1 the quick brown fox jumps over the lazy dog.
  11. change data "haha"
  12. 3 the quick brown fox jumps over the lazy dog.
  13. 4 the quick brown fox jumps over the lazy dog.
  14. 5 the quick brown fox jumps over the lazy dog.
  15. data1文件中的第二、三、四行的内容更改为:change data "haha"
  16. [root@zutuanxue ~]# sed '2,4c\change data "haha"' data1
  17. 1 the quick brown fox jumps over the lazy dog.
  18. change data "haha"
  19. 5 the quick brown fox jumps over the lazy dog.
  20. data1文件中包含"3 the"的行内容更改为: change data "haha"
  21. [root@zutuanxue ~]# sed '/3 the/c\change data "data"' data1
  22. 1 the quick brown fox jumps over the lazy dog.
  23. 2 the quick brown fox jumps over the lazy dog.
  24. change data "data"
  25. 4 the quick brown fox jumps over the lazy dog.
  26. 5 the quick brown fox jumps over the lazy dog.

文件内容修改操作–字符转换,将一行中匹配的内容替换为新的数据,使用命令y。
演示案例

  1. data1中的a b c字符转换为对应的 A B C字符
  2. [root@zutuanxue ~]# sed 'y/abc/ABC/' data1
  3. 1 the quiCk Brown fox jumps over the lAzy dog.
  4. 2 the quiCk Brown fox jumps over the lAzy dog.
  5. 3 the quiCk Brown fox jumps over the lAzy dog.
  6. 4 the quiCk Brown fox jumps over the lAzy dog.
  7. 5 the quiCk Brown fox jumps over the lAzy dog.

文件内容删除,将文件中的指定数据删除,使用命令d。
演示案例

  1. 删除文件data1中的所有数据
  2. [root@zutuanxue ~]# sed 'd' data1
  3. 删除文件data1中的第三行数据
  4. [root@zutuanxue ~]# sed '3d' data1
  5. 1 the quick brown fox jumps over the lazy dog.
  6. 2 the quick brown fox jumps over the lazy dog.
  7. 4 the quick brown fox jumps over the lazy dog.
  8. 5 the quick brown fox jumps over the lazy dog.
  9. 删除文件data1第三到第四行的数据
  10. [root@zutuanxue ~]# sed '3,4d' data1
  11. 1 the quick brown fox jumps over the lazy dog.
  12. 2 the quick brown fox jumps over the lazy dog.
  13. 5 the quick brown fox jumps over the lazy dog.
  14. 删除文件data1中包含字符串"3 the"的行
  15. [root@zutuanxue ~]# sed '/3 the/d' data1
  16. 1 the quick brown fox jumps over the lazy dog.
  17. 2 the quick brown fox jumps over the lazy dog.
  18. 4 the quick brown fox jumps over the lazy dog.
  19. 5 the quick brown fox jumps over the lazy dog.

文件内容查看,将文件内容输出到屏幕,使用命令p。
演示案例

  1. 打印data1文件内容
  2. [root@zutuanxue ~]# sed 'p' data1
  3. 1 the quick brown fox jumps over the lazy dog.
  4. 1 the quick brown fox jumps over the lazy dog.
  5. 2 the quick brown fox jumps over the lazy dog.
  6. 2 the quick brown fox jumps over the lazy dog.
  7. 3 the quick brown fox jumps over the lazy dog.
  8. 3 the quick brown fox jumps over the lazy dog.
  9. 4 the quick brown fox jumps over the lazy dog.
  10. 4 the quick brown fox jumps over the lazy dog.
  11. 5 the quick brown fox jumps over the lazy dog.
  12. 5 the quick brown fox jumps over the lazy dog.
  13. 打印data1文件第三行的内容
  14. [root@zutuanxue ~]# sed '3p' data1
  15. 1 the quick brown fox jumps over the lazy dog.
  16. 2 the quick brown fox jumps over the lazy dog.
  17. 3 the quick brown fox jumps over the lazy dog.
  18. 3 the quick brown fox jumps over the lazy dog.
  19. 4 the quick brown fox jumps over the lazy dog.
  20. 5 the quick brown fox jumps over the lazy dog.
  21. 打印data1文件第二、三、四行内容
  22. [root@zutuanxue ~]# sed '2,4p' data1
  23. 1 the quick brown fox jumps over the lazy dog.
  24. 2 the quick brown fox jumps over the lazy dog.
  25. 2 the quick brown fox jumps over the lazy dog.
  26. 3 the quick brown fox jumps over the lazy dog.
  27. 3 the quick brown fox jumps over the lazy dog.
  28. 4 the quick brown fox jumps over the lazy dog.
  29. 4 the quick brown fox jumps over the lazy dog.
  30. 5 the quick brown fox jumps over the lazy dog.
  31. 打印data1文件包含字符串"3 the"的行
  32. [root@zutuanxue ~]# sed '/3 the/p' data1
  33. 1 the quick brown fox jumps over the lazy dog.
  34. 2 the quick brown fox jumps over the lazy dog.
  35. 3 the quick brown fox jumps over the lazy dog.
  36. 3 the quick brown fox jumps over the lazy dog.
  37. 4 the quick brown fox jumps over the lazy dog.
  38. 5 the quick brown fox jumps over the lazy dog.
  39. 可以看得出,打印内容是重复的行,原因是打印了指定文件内容一次,又将读入缓存的所有数据打印了一次,所以会看到这样的效果,
  40. 如果不想看到这样的结果,可以加命令选项-n抑制内存输出即可。

2.2)命令选项说明

sed语法
在sed命令中,命令选项是对sed中的命令的增强
在命令行中使用多个命令 -e

  1. brown替换为green dog替换为cat
  2. [root@zutuanxue ~]# sed -e 's/brown/green/;s/dog/cat/' data1
  3. 1 the quick green fox jumps over the lazy cat.
  4. 2 the quick green fox jumps over the lazy cat.
  5. 3 the quick green fox jumps over the lazy cat.
  6. 4 the quick green fox jumps over the lazy cat.
  7. 5 the quick green fox jumps over the lazy cat.

从文件读取编辑器命令 -f 适用于日常重复执行的场景

  1. 1)将命令写入文件
  2. [root@zutuanxue ~]# vim abc
  3. s/brown/green/
  4. s/dog/cat/
  5. s/fox/elephant/
  6. 2)使用-f命令选项调用命令文件
  7. [root@zutuanxue ~]# sed -f abc data1
  8. 1 the quick green elephant jumps over the lazy cat.
  9. 2 the quick green elephant jumps over the lazy cat.
  10. 3 the quick green elephant jumps over the lazy cat.
  11. 4 the quick green elephant jumps over the lazy cat.
  12. 5 the quick green elephant jumps over the lazy cat.

抑制内存输出 -n

  1. 打印data1文件的第二行到最后一行内容 $最后的意思
  2. [root@zutuanxue ~]# sed -n '2,$p' data1
  3. 2 the quick brown fox jumps over the lazy dog.
  4. 3 the quick brown fox jumps over the lazy dog.
  5. 4 the quick brown fox jumps over the lazy dog.
  6. 5 the quick brown fox jumps over the lazy dog.

使用正则表达式 -r

  1. 打印data1中以字符串"3 the"开头的行内容
  2. [root@zutuanxue ~]# sed -n -r '/^(3 the)/p' data1
  3. 3 the quick brown fox jumps over the lazy dog.

从上述的演示中,大家可以看出,数据处理只是在缓存中完成的,并没有实际修改文件内容,如果需要修改文件内容可以直接使用-i命令选项。在这里我需要说明的是-i是一个不可逆的操作,一旦修改,如果想复原就很困难,几乎不可能,所以建议大家在操作的时候可以备份一下源文件。-i命令选项提供了备份功能,比如参数使用-i.bak,那么在修改源文件的同时会先备份一个以.bak结尾的源文件,然后再进行修改操作。

  1. 1)查看文件列表,没有发现data1.bak
  2. [root@zutuanxue ~]# ls
  3. abc apache data1 Dobby file node-v10.14.1 Python-3.7.1 soft1 vimset
  4. 2)执行替换命令并修改文件
  5. [root@zutuanxue ~]# sed -i.bak 's/brown/green/' data1
  6. 3)发现文件夹中多了一个data1.bak文件
  7. [root@zutuanxue ~]# ls
  8. abc data1 Dobby node-v10.14.1 soft1
  9. apache data1.bak file Python-3.7.1 vimset
  10. 4)打印比较一下,发现data1已经被修改,data1.bak是源文件的备份。
  11. [root@zutuanxue ~]# cat data1
  12. 1 the quick green fox jumps over the lazy dog.
  13. 2 the quick green fox jumps over the lazy dog.
  14. 3 the quick green fox jumps over the lazy dog.
  15. 4 the quick green fox jumps over the lazy dog.
  16. 5 the quick green fox jumps over the lazy dog.
  17. [root@zutuanxue ~]# cat data1.bak
  18. 1 the quick brown fox jumps over the lazy dog.
  19. 2 the quick brown fox jumps over the lazy dog.
  20. 3 the quick brown fox jumps over the lazy dog.
  21. 4 the quick brown fox jumps over the lazy dog.
  22. 5 the quick brown fox jumps over the lazy dog.

2.3)标志

在sed命令中,标志是对sed中的内部命令做补充说明

  1. 演示文档
  2. [root@zutuanxue ~]# cat data2
  3. 1 the quick brown fox jumps over the lazy dog . dog
  4. 2 the quick brown fox jumps over the lazy dog . dog
  5. 3 the quick brown fox jumps over the lazy dog . dog
  6. 4 the quick brown fox jumps over the lazy dog . dog
  7. 5 the quick brown fox jumps over the lazy dog . dog

数字标志:此标志是一个非零正数,默认情况下,执行替换的时候,如果一行中有多个符合的字符串,如果没有标志位定义,那么只会替换第一个字符串,其他的就被忽略掉了,为了能精确替换,可以使用数字位做定义。

  1. 替换一行中的第二处dogcat
  2. [root@zutuanxue ~]# sed 's/dog/cat/2' data2
  3. 1 the quick brown fox jumps over the lazy dog . cat
  4. 2 the quick brown fox jumps over the lazy dog . cat
  5. 3 the quick brown fox jumps over the lazy dog . cat
  6. 4 the quick brown fox jumps over the lazy dog . cat
  7. 5 the quick brown fox jumps over the lazy dog . cat

g标志:将一行中的所有符合的字符串全部执行替换

  1. data1文件中的所有dog替换为cat
  2. [root@zutuanxue ~]# sed 's/dog/cat/g' data2
  3. 1 the quick brown fox jumps over the lazy cat . cat
  4. 2 the quick brown fox jumps over the lazy cat . cat
  5. 3 the quick brown fox jumps over the lazy cat . cat
  6. 4 the quick brown fox jumps over the lazy cat . cat
  7. 5 the quick brown fox jumps over the lazy cat . cat

p标志:打印文本内容,类似于-p命令选项

  1. [root@zutuanxue ~]# sed '3s/dog/cat/p' data2
  2. 1 the quick brown fox jumps over the lazy dog . dog
  3. 2 the quick brown fox jumps over the lazy dog . dog
  4. 3 the quick brown fox jumps over the lazy cat . dog
  5. 3 the quick brown fox jumps over the lazy cat . dog
  6. 4 the quick brown fox jumps over the lazy dog . dog
  7. 5 the quick brown fox jumps over the lazy dog . dog

w filename标志:将修改的内容存入filename文件中

  1. [root@zutuanxue ~]# sed '3s/dog/cat/w text' data2
  2. 1 the quick brown fox jumps over the lazy dog . dog
  3. 2 the quick brown fox jumps over the lazy dog . dog
  4. 3 the quick brown fox jumps over the lazy cat . dog
  5. 4 the quick brown fox jumps over the lazy dog . dog
  6. 5 the quick brown fox jumps over the lazy dog . dog
  7. 可以看出,将修改的第三行内容存在了text文件中
  8. [root@zutuanxue ~]# cat text
  9. 3 the quick brown fox jumps over the lazy cat . dog

三、练习案例

3.1、写一个初始化系统的脚本
案例需求
1)自动修改主机名(如:ip是192.168.0.88,则主机名改为server88.zutuanxue.cc)
a. 更改文件非交互式 sed
/etc/sysconfig/network
b.将本主机的IP截取出来赋值给一个变量ip;再然后将ip变量里以.分割的最后一位赋值给另一个变量ip1
2)自动配置可用的yum源
3)自动关闭防火墙和selinux

  1. 1、关闭防火墙
  2. 2、关闭selinux
  3. 3、配置yum
  4. 4ntp时间服务器
  5. 5、更新系统软件包

3.2、写一个搭建ftp服务的脚本,要求如下:
案例需求
1)不支持本地用户登录 local_enable=NO
2) 匿名用户可以上传 新建 删除 anon_upload_enable=YES anon_mkdir_write_enable=YES
3) 匿名用户限速500KBps anon_max_rate=500000

  1. 仅供参考:
  2. #!/bin/bash
  3. ipaddr=`ifconfig eth0|sed -n '2p'|sed -e 's/.*inet addr:\(.*\) Bcast.*/\1/g'`
  4. iptail=`echo $ipaddr|cut -d'.' -f4`
  5. ipremote=192.168.1.10
  6. #修改主机名
  7. hostname server$iptail.zutuanxue.com
  8. sed -i "/HOSTNAME/cHOSTNAME=server$iptail.zutuanxue.com" /etc/sysconfig/network
  9. echo "$ipaddr server$iptail.zutuanxue.cc" >>/etc/hosts
  10. #关闭防火墙和selinux
  11. service iptables stop
  12. setenforce 0 >/dev/null 2>&1
  13. sed -i '/^SELINUX=/cSELINUX=disabled' /etc/selinux/config
  14. #配置yum源(一般是内网源)
  15. #test network
  16. ping -c 1 $ipremote > /dev/null 2>&1
  17. if [ $? -ne 0 ];then
  18. echo "你的网络不通,请先检查你的网络"
  19. exit 1
  20. else
  21. echo "网络ok."
  22. fi
  23. cat > /etc/yum.repos.d/server.repo << end
  24. [server]
  25. name=server
  26. baseurl=ftp://$ipremote
  27. enabled=1
  28. gpgcheck=0
  29. end
  30. #安装软件
  31. read -p "请输入需要安装的软件,多个用空格隔开:" soft
  32. yum -y install $soft &>/dev/null
  33. #备份配置文件
  34. conf=/etc/vsftpd/vsftpd.conf
  35. \cp $conf $conf.default
  36. #根据需求修改配置文件
  37. sed -ir '/^#|^$/d' $conf
  38. sed -i '/local_enable/c\local_enable=NO' $conf
  39. sed -i '$a anon_upload_enable=YES' $conf
  40. sed -i '$a anon_mkdir_write_enable=YES' $conf
  41. sed -i '$a anon_other_write_enable=YES' $conf
  42. sed -i '$a anon_max_rate=512000' $conf
  43. #启动服务
  44. service vsftpd restart &>/dev/null && echo"vsftpd服务启动成功"
  45. #测试验证
  46. chmod 777 /var/ftp/pub
  47. cp /etc/hosts /var/ftp/pub
  48. #测试下载
  49. cd /tmp
  50. lftp $ipaddr <<end
  51. cd pub
  52. get hosts
  53. exit
  54. end
  55. if [ -f /tmp/hosts ];then
  56. echo "匿名用户下载成功"
  57. rm -f /tmp/hosts
  58. else
  59. echo "匿名用户下载失败"
  60. fi
  61. #测试上传、创建目录、删除目录等
  62. cd /tmp
  63. lftp $ipaddr << end
  64. cd pub
  65. mkdir test1
  66. mkdir test2
  67. put /etc/group
  68. rmdir test2
  69. exit
  70. end
  71. if [ -d /var/ftp/pub/test1 ];then
  72. echo "创建目录成功"
  73. if [ ! -d /var/ftp/pub/test2 ];then
  74. echo "文件删除成功"
  75. fi
  76. else
  77. if [ -f /var/ftp/pub/group ];then
  78. echo "文件上传成功"
  79. else
  80. echo "上传、创建目录删除目录部ok"
  81. fi
  82. fi
  83. [ -f /var/ftp/pub/group ] && echo "上传文件成功"