在Linux上运行.sh脚本时出现语法错误。我究竟做错了什么？

Question

我一直在试图编写一个shell脚本来检测虚拟linux = Ubuntu 16.0.4机器上的作曲家和混帐，然后在需要时安装它们。 +如果机器准备好了，则克隆所需的存储库。 现在，这是我第一次尝试编写任何类型的脚本，也很抱歉，如果我以某种方式搞砸了这个问题本身，我现在也在使用stackoverflow。

任何帮助表示赞赏，在此先感谢。

这是我最初接收到的原始任务说明：

-check如果要是这样安装在服务器 混帐，克隆回购与代码库

-check如果要是这样安装在服务器 作曲家，作曲安装在laravel应用程序的根目录

- 最后，PHP工匠迁移--seed

现在，这是我是如何努力实现这一目标：

#!/bin/bash 
echo "The installation process is about the begin..." 


if ! which git; 
    then echo "Git has been located on the destination system. Cloning begins..." 
git clone <link to the gitlabe repo> 

else echo "There is no Git installed on the system. Git installation  commences..." 

     sudo apt-get update 
     sudo apt-get upgrade 
     sudo apt-get install git 

     echo "Cloning begins..." 
     git clone <link to the gitlabe repo> 
fi 

if ! which composer; 
then 
    echo "Composer has been located on the destination system." 
else 
    echo "There is no Composer installed on the system. Composer installation commences..." 
     sudo apt-get update 
     sudo apt-get upgrade 
     sudo apt-get install composer 
fi 

sudo apt-get update 
sudo apt-get install curl php5-cli git 
curl -sS https://getcomposer.org/installer | sudo php -- --install- dir=/usr/local/bin --filename=composer 





composer global require "laravel/installer" 


sudo apt-get update 

'Now the preferred version in the vagrantfile has to be edited to be 1.8.1    instead of 1.9' 

'Generate a ssh key' 
ssh-keygen -t rsa -b 4096 -C "< e-mail adress that I used >" 

'Start ssh agent eval $' 
ssh-agent -s 

'Add your SSH private key to the ssh-agent' 
ssh-add -K ~/.ssh/id_rsa 


php artisan migrate --seed 

错误消息我收到：

sudo sh ./testscript.sh 
[sudo] password for linuxtest: 
The installation process is about the begin... 
: not foundt.sh: 3: ./testscript.sh: 
: not foundt.sh: 4: ./testscript.sh: 
: not foundt.sh: 5: ./testscript.sh: 
./testscript.sh: 72: ./testscript.sh: Syntax error: end of file unexpected (expecting "then") 

Answer 1

，帮助我解决我的问题被张贴查尔斯·达菲在评论答案：

这看起来像你的文件有DOS，而不是UNIX换行。这将防止识别fi这样的语法，因为它被读作fi $'\ r'，这不是关键字。

Answer 2

#!/bin/bash 
echo "The installation process is about the begin..."; 
if [ -x "$(command -v git)" ]; then 
    echo "Git has been located on the destination system. Cloning; begins..." 
    git clone <link to the gitlabe repo>; 
else 
    echo "There is no Git installed on the system. Git installation commences..."; 
    sudo apt-get update && sudo apt-get upgrade && sudo apt-get install git; 

    echo "Cloning begins..."; 
    git clone <link to the gitlabe repo>; 
fi 

if [ -x "$(command -v composer)" ]; then 
    echo "Composer has been located on the destination system."; 
else 
    echo "There is no Composer installed on the system. Composer installation commences..."; 
    sudo apt-get update && sudo apt-get upgrade && sudo apt-get install composer; 
fi 

嘿

我想这应该解决您如果条件问题。如果你想知道更多关于如何检查程序存在的情况，请看这里： Check if a program exists from a Bash script 它是quickfix的第二个答案。

一定要记住通过“& &”取决于上述命令成功的链接命令。这保证了如果前面的命令没有失败，就会执行下一个命令。

我建议使用ssh命令以相同的方式执行此操作。

@edit 还确保您以分号结尾每个命令。

希望我能帮上忙。