如何在输入命令时找到执行的二进制文件？

Question

我刚刚安装了TeX-Live 2012，但我仍然

moose@pc07:~$ latex --version
pdfTeX 3.1415926-1.40.10-2.2 (TeX Live 2009/Debian)
kpathsea version 5.0.0
Copyright 2009 Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX).
There is NO warranty.  Redistribution of this software is
covered by the terms of both the pdfTeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the pdfTeX source.
Primary author of pdfTeX: Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX).
Compiled with libpng 1.2.42; using libpng 1.2.42
Compiled with zlib 1.2.3.3; using zlib 1.2.3.3
Compiled with poppler version 0.12.4

所以我想知道当我进入latex --version时执行的二进制文件在哪里。这个是可能的吗？

Answer 1

type命令内置于bash (which是一个独立的程序)。

type latex

如果传递type选项，则-a命令还可以区分shell别名、shell函数和独立程序:我有ls的别名

$ type -a ls
ls is aliased to `ls -F'
ls is /bin/ls

Answer 2

您可以使用

which latex

去找出一个双筒望远镜的位置。