在 Windows 7 上的 cygwin 中运行 bash 脚本
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running bash script in cygwin on windows 7
提问by peter
I am trying to run the below bash script in cygwin on windows 7
我正在尝试在 Windows 7 上的 cygwin 中运行以下 bash 脚本
REPEATTIMES=""
if [ $# = 0 ]; then
echo "Usage: fetch topN repeatTimes"
exit 1
fi
for (( i=1; i<=$REPEATTIMES; i++ ))
do
echo "ITERATION: $i"
echo "GENERATING"
log=thelogs/log
bin/nutch generate crawl/segment -topN 10 > $log
batchId=`sed -n 's|.*batch id: \(.*\)||p' < $log`
echo "batch id: $batchId "
# rename log file by appending the batch id
log2=$log$batchId
mv $log $log2
log=$log2
echo "FETCHING"
bin/nutch fetch crawl/segments/$batchId >> $log
echo "PARSING"
bin/nutch parse crawl/segments/$batchId >> $log
echo "UPDATING DB"
bin/nutch updatedb crawl/crawldb crawl/segments/$batchId >> $log
echo "Done "
done
But when i run it i get the error :
但是当我运行它时，我收到错误：
line 11 :syntax error near unexpected token '$'\r'
line 11 :'for (( i=1; i<= REPEATTIMES; i++ ))
The script works fine on a ubuntu server. But i need to run it now on a windows machine.
该脚本在 ubuntu 服务器上运行良好。但我现在需要在 Windows 机器上运行它。
采纳答案by EJK
The latest version of Cygwin seems to only support files in Unix format (i.e. with \n for newlines as opposed to the DOS/Windows \r\n newline).
最新版本的 Cygwin 似乎只支持 Unix 格式的文件（即用 \n 表示换行符，而不是 DOS/Windows \r\n 换行符）。
To fix this, run the /bin/dos2unix.exe utility, giving your script as the argument to the command:
要解决此问题，请运行 /bin/dos2unix.exe 实用程序，将您的脚本作为命令的参数：
e.g. /bin/dos2unix.exe myScript.sh
This will convert it to Unix format and you then should be able to run it.
这会将其转换为 Unix 格式，然后您应该能够运行它。
回答by William
If you can't fix all your scripts, you should be able to modify the EOL behavior in Cygwin by setting an option to ignore CRs:
如果您无法修复所有脚本，您应该能够通过设置忽略 CR 的选项来修改 Cygwin 中的 EOL 行为：
set -o igncr
If you add this to your .bash_profile, it will be globally set by default when you login:
如果你把它添加到你的 .bash_profile 中，它会在你登录时默认全局设置：
export SHELLOPTS
set -o igncr
You can also do this per script internally by putting this line just after the #! line:
您也可以通过将这一行放在 #! 线：
(set -o igncr) 2>/dev/null && set -o igncr; # this comment is required
You need the comment to ignore the CR in that line which is read before the option takes effect.
您需要注释以忽略在选项生效之前读取的该行中的 CR。
