使用linux“剪切”使用标准输入
我正在尝试将数据通过管道传输到“剪切”中，例如剪切掉第一列文本。这有效
$ cat test.txt | cut -d\ -f2-
从标准输入读取也有效：
$ cut -d\ -f2- -
? doc/html/analysis.html
? doc/html/classxytree-members.html
<CTRL+D>
但是，一旦涉及管道，它就不再接受我的
$ cut -d\ -f2- - | xargs echo
更新：这显然是旧版本 bash (3.00.15) 中的一个错误。它确实可以在更新的版本中工作（尝试过 4.0.33 和 3.2.25）。不过，最好有一些解决方法，因为我无法轻松升级。
背景：我有一个脚本/oneliner，它以
? filename
例如以下 形式为我提供了 cvs status （我知道，CVS...）的压缩输出对于尚未提交的文件。我希望能够复制+粘贴该命令的部分输出，并将其用作另一个命令的输入，该命令将这些文件添加到 cvs 中。说：
$ cut -d\ -f2- | xargs cvs add
<paste lines>
<CTRL-D> # <-- doesn't work
想法？
I'm trying to pipe data into "cut" to, say, cut away the first column of text. This works
$ cat test.txt | cut -d\ -f2-
Reading from stdin also works:
$ cut -d\ -f2- -
? doc/html/analysis.html
? doc/html/classxytree-members.html
<CTRL+D>
However, as soon as a pipe is involved, it doesn't accept my <CTRL+D> anymore, and I can't signal "end of file":
$ cut -d\ -f2- - | xargs echo
Update: This is apparently a bug in an old version of bash (3.00.15). It does work in more recent versions (tried 4.0.33 and 3.2.25). It would be nice to have some workaround, though, since I can't easily upgrade.
Background: I've got a script/oneliner that gives me a condensed output of cvs status (I know, CVS...) in the form
? filename
e.g. for a file not committed yet. I'd like to be able to copy+paste parts of the output from that command and use this as an input to another command, that adds these files to cvs. Say:
$ cut -d\ -f2- | xargs cvs add
<paste lines>
<CTRL-D> # <-- doesn't work
Ideas?
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评论（2）
你试过吗
have you tried
你的例子对我来说效果很好。你用什么外壳？什么公用事业？
有时让人困惑的一件事是 Ctrl-D 仅当它是行中的第一个字符时才有效。如果复制并粘贴，有时可能会意外地将空格作为该行的第一个字符，或者在粘贴块的末尾没有换行符，在这种情况下 Ctrl-D 不起作用。只需按回车键，然后再次尝试 Ctrl-D 即可，看看是否可以解决您的问题。
Your examples work fine for me. What shell are you using? What utilities?
One thing that sometimes trips people up is that Ctrl-D only works if it's the first character in the line. If you copy and paste, you might sometimes accidentally have whitespace as the first character of the line, or no newline at the end of the pasted block, in which case Ctrl-D won't work. Just hit return and then try Ctrl-D again and see if that fixes your problem.