-bash：：在Mac中启动外壳时找不到的命令

Question

最近，我试图对我的.bash_profile.中的路径进行一些更改。

在我尝试用source .bash_profile验证这些更改并获得-bash: : command not found之后，

我还注意到，当我打开shell时，在执行任何命令之前，它已经处于"-bash：：命令未找到“.

显然，对.bash_profile所做的改变并没有被系统的niether考虑在内。

求你了救命！我想我把.bash_profile弄得太乱了，我不知道怎么修理它.

.bash_profile的内容：

cat .bash_profile
# Finished adapting your PATH environment variable for use with MacPorts.
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
##
# MacPorts Installer addition on 2014-03-24_at_12:05:55: adding an appropriate PATH variable for use with MacPorts.
### Your previous /Users/usrname/.bash_profile file was backed up as /Users/usrname/.bash_profile.macports-saved_2014-03-24_at_12:05:55
##export PATH="/Users/usrname/anaconda/bin:$PATH"
# added by Anaconda 1.9.1 installer
##Additional binary folders
export PATH=/Users/usrname/TreeTagger/cmd:$PATH
export PATH= /Users/usrname/TreeTagger/bin:$PATH
export UIMA_HOME= $/Users/usrname/apache-uima
export PATH=$PATH:$UIMA_HOME/bin
export HEIDELTIME_HOME='/Users/usrname/Downloads/heideltime-kit/'
export TREETAGGER_HOME='/Users/usrname/TreeTagger'
source $HEIDELTIME_HOME/metadata/setenv

.bash_profile的更新内容：

cat .bash_profile
# Finished adapting your PATH environment variable for use with MacPorts.
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
##
# MacPorts Installer addition on 2014-03-24_at_12:05:55: adding an appropriate PATH variable for use with MacPorts.
### Your previous /Users/usrname/.bash_profile file was backed up as /Users/usrname/.bash_profile.macports-saved_2014-03-24_at_12:05:55
##export PATH="/Users/usrname/anaconda/bin:$PATH"
# added by Anaconda 1.9.1 installer
##Additional binary folders
export PATH="/Users/usrname/TreeTagger/cmd:$PATH"
export PATH="/Users/usrname/TreeTagger/bin:$PATH"
export UIMA_HOME="/Users/usrname/apache-uima"
export PATH=$PATH:$UIMA_HOME/bin
export HEIDELTIME_HOME="/Users/usrname/Downloads/heideltime-kit/"
export TREETAGGER_HOME="/Users/usrname/TreeTagger"
source $HEIDELTIME_HOME/metadata/setenv

上次引号修正后的完整shell输出：

Last login: Thu Jul 31 19:07:05 on ttys000
-bash: : command not found
usr:~ usrname$ cat .bash_profile
# Finished adapting your PATH environment variable for use with MacPorts.
export PATH="/opt/local/bin:/opt/local/sbin:$PATH"
##
# MacPorts Installer addition on 2014-03-24_at_12:05:55: adding an appropriate PATH variable for use with MacPorts.
### Your previous /Users/usrname/.bash_profile file was backed up as /Users/usrname/.bash_profile.macports-saved_2014-03-24_at_12:05:55
##export PATH="/Users/usrname/anaconda/bin:$PATH"
# added by Anaconda 1.9.1 installer
##Additional binary folders
export PATH="/Users/usrname/TreeTagger/cmd:$PATH"
export PATH="/Users/usrname/TreeTagger/bin:$PATH"
export UIMA_HOME="/Users/usrname/apache-uima"
export PATH="$PATH:$UIMA_HOME/bin"
export HEIDELTIME_HOME="/Users/usrname/Downloads/heideltime-kit/"
export TREETAGGER_HOME="/Users/usrname/TreeTagger"
source $HEIDELTIME_HOME/metadata/setenv


usr:~ usrname$ source .bash_profile
-bash: : command not found

使用echo命令编辑：

  cat .bash_profile
# Finished adapting your PATH environment variable for use with MacPorts.
export PATH="/opt/local/bin:/opt/local/sbin:$PATH"
##
# MacPorts Installer addition on 2014-03-24_at_12:05:55: adding an appropriate PATH variable for use with MacPorts.
### Your previous /Users/usrname/.bash_profile file was backed up as /Users/usrname/.bash_profile.macports-saved_2014-03-24_at_12:05:55
##export PATH="/Users/usrname/anaconda/bin:$PATH"
# added by Anaconda 1.9.1 installer
##Additional binary folders
export PATH="/Users/usrname/TreeTagger/cmd:$PATH"
export PATH="/Users/usrname/TreeTagger/bin:$PATH"
export UIMA_HOME="/Users/usrname/apache-uima"
export PATH="$PATH:$UIMA_HOME/bin"
export HEIDELTIME_HOME="/Users/usrname/Downloads/heideltime-kit/"
export TREETAGGER_HOME="/Users/usrname/TreeTagger"
echo before
source $HEIDELTIME_HOME/metadata/setenv
echo after


usr:~ usrname$ source .bash_profile
-bash: : command not found
usr:~ usrname$ echo $PATH
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin

编辑+bash版本：

echo $BASH_VERSION
3.2.51(1)-release
usr:~ usrname$ source ./.bash_profile
-bash: : command not found

在将set -x添加到.bash_profile之后，编辑+：

usr:~ usrname$ source ./.bash_profile
++ $'\016'
-bash: : command not found
++ update_terminal_cwd
++ local 'SEARCH= '
++ local REPLACE=%20
++ local PWD_URL=file://usr.local/Users/usrname
++ printf '\e]7;%s\a' file://usr.local/Users/usrname

Answer 1

这一行：

export PATH= /Users/usrname/TreeTagger/bin:$PATH

是问题所在。在变量赋值(包括export )中，=周围不能有空格。使用添加的空格，它将$PATH设置为空字符串。

改为：

export PATH=/Users/usrname/TreeTagger/bin:$PATH

为了安全起见，您应该添加双引号：

export PATH="/Users/usrname/TreeTagger/bin:$PATH"

以防万一$PATH的值中有任何特殊字符。

UIMA_HOME也有同样的问题。

更新:

根据以后的评论，您的.bash_profile中似乎有一个偏离控制字符。在set -x中，它显示为$'\016'。bash试图将其作为命令名来处理，但毫不奇怪，无法找到它。编辑您的.bash_profile并删除该字符。

(其他错误无论如何都需要纠正。)