问题描述
我有一个bash脚本，可以从ftp检索文件.
I have a bash script to retrieve files from ftp.
现在，文件中的文件名中一部分包含日期字符串，但每个文件上都有未定义的数字.我想根据日期下载文件.
Now the files have one part a date string in the filename, but also undefined numbers that changes on every file. I want to download the files based on the date.
这是我的代码.我只需要做通配符就可以了，ftp脚本已经可以使用了.
This is my code. I only need to do the wildcard trick, the ftp script is allready work.
filename=$(echo $TIMESTAMP'0***vel.radar.h5')
星星是我无法估计的3位数字，因此我将对它们使用通配符.
The stars are 3 digits with different numbers that i can't estimate, so i would use the wildcard for them.
谢谢
推荐答案
听起来您想处理多个文件，但是您的脚本一次只能处理一个文件.此外，由于您指定了FTP，因此听起来文件位于FTP服务器上，在这种情况下，本地文件名扩展将无济于事.
It sounds like you want to handle multiple files, but your script can only handle one file at a time. Furthermore, because you specified FTP, it sounds like the files are on the FTP server, in which case local filename expansion will not help.
您可能想使用ftp客户端的 mget 命令来下载与远程模式匹配的多个文件.您还希望将 $ TIMESTAMP 作为模式的一部分.我建议是这样的:
You probably want to use the ftp client's mget command to download multiple files matching a pattern on the remote side. You also want to include $TIMESTAMP as part of the pattern. I'd suggest something like this:
ftp remote-hostname <<EOF
cd path/to/log/files
prompt
mget ${TIMESTAMP}0???vel.radar.h5
bye
EOF
这将使用此处文档(仅一行上的<< EOF 至 EOF )将输入文本提供给ftp命令.它将扩展变量 $ TIMESTAMP ，使其成为 mget 命令的一部分，例如如果$ TIMESTAMP是12345，则将告诉ftp命令 mget 123450 ??? vel.radar.h5 .
This uses a here-document (<<EOF to EOF on a line by itself) to supply input text to the ftp commmand. It will expand the variable $TIMESTAMP so it becomes part of the mget command, e.g. if $TIMESTAMP was 12345, the ftp command will be told mget 123450???vel.radar.h5.
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