如何将Linuxwhich命令的输出通过管道传输到Linux文件命令中？
$ which file
/usr/bin/file
$ file /usr/bin/file
/usr/bin/file: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped
为什么这不起作用？
$ which file | file
Usage: file [-bcikLhnNrsvz0] [-e test] [-f namefile] [-F separator] [-m magicfiles] file...
file -C -m magicfiles
尝试 file --help 了解更多信息。
$ which file
/usr/bin/file
$ file /usr/bin/file
/usr/bin/file: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped
Why does this not work?
$ which file | file
Usage: file [-bcikLhnNrsvz0] [-e test] [-f namefile] [-F separator] [-m magicfiles] file...
file -C -m magicfiles
Try file --help for more information.
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您可能正在寻找 xargs 或 shell 扩展。尝试：
或
You're probably looking for xargs or shell expansion. Try:
or
file期望其参数出现在命令行上，而不是其标准输入上，除非您另有说明：或者：
或者，为了完整起见：
fileexpects its arguments on the command line, not on its standard input, unless you tell it otherwise:Alternatively:
Or, for completeness:
请尝试使用反引号，例如
您的示例不起作用，因为您的管道正在将 which 命令的输出发送到 file 命令的标准输入。但 file 不适用于标准输入 - 它适用于命令行参数。
Try backquotes instead, e.g.
Your example doesn't work because your pipe is sending the output of the which command to the stdin of the file command. But file doesn't work on stdin - it works on a command line argument.