使用 bash 脚本添加到 $PYTHONPATH
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Adding to $PYTHONPATH with bash script
提问by cmoses
I wrote a bash script to add to my $PYTHONPATH. My .shfile has the following:
我写了一个 bash 脚本来添加到我的$PYTHONPATH. 我的.sh文件有以下内容：
sudo echo export PYTHONPATH=$PYTHONPATH:/path/to/new/python/module >> ~/.bashrc
What I want to be added to my .bashrcis:
我想添加到我的.bashrc是：
PYTHONPATH=$PYTHONPATH:/path/to/new/python/module
However I can only get it to add:
但是我只能让它添加：
PYTHONPATH=/all/other/python/modules/already/on/path:/path/to/new/python/module
I don't want the actual $PYTHONPATHvalue to be added to my .bashrc, just the variable name. Please help!
我不希望将实际$PYTHONPATH值添加到 my 中.bashrc，而只是将变量名添加到。请帮忙！
采纳答案by John1024
Use single-quotes:
使用单引号：
$ echo 'export PYTHONPATH=$PYTHONPATH:/path/to/new/python/module' >> .bashrc
$ cat .bashrc
export PYTHONPATH=$PYTHONPATH:/path/to/new/python/module
The shell does not perform variable expansion on single-quoted strings.
Shell 不会对单引号字符串执行变量扩展。
Note also that, if you are writing to ~/.bashrc, you should not need sudo. A user should own his own ~/.bashrc. Further, as written, the sudocommand only operated on echo. The redirection >~/.bashrcis done with the user's level of permission. Since echohas no need of and gets no benefit from sudo, sudois a practically a no-op. [Hat tip: tripleee]
另请注意，如果您要写入 ，则~/.bashrc不需要sudo. 用户应该拥有自己的~/.bashrc. 此外，如所写，该sudo命令仅对 进行操作echo。重定向>~/.bashrc是在用户的权限级别下完成的。由于echo不需要也不从中受益sudo，sudo因此实际上是无操作的。[帽子提示：三重奏]
回答by payam jome yazdian
try
尝试
echo 'export PYTHONPATH=/path/to/caff-dir/python'
Also, you may need to run following:
此外，您可能需要运行以下命令：
pip install -r requirement.txt
