相关疑难解决方法(0)

我正在使用zsh,我正在尝试向变量添加一个新的条目(/home/david/pear/bin),PATH但我不知道如何.

最让我困惑的是,PATH我的~/.zshrc文件中没有对变量的引用,但是echo $PATH返回:

/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

所以PATH变量正在某处设置.

bash: flutter: command not found

嗨,大家好!显然没有扑命令正在Android的工作室,我相信,我想我的项目的根目录运行它的终端上.先感谢您

如何检查(逐步)我的Mac 10.8.5上安装的mySQL版本？

我尝试使用命令提示符,但无法弄清楚.

我正在尝试将mysqlclient安装到我的Python 3.6中.最初我要安装的是MySQLdb,但是它说MySQLdb不适用于Python 3(仍然？).所以我切换到mysqlclient.

pip3 install mysqlclient

但是,它给出了这个错误:

    Collecting mysqlclient
  Using cached https://files.pythonhosted.org/packages/ec/fd/83329b9d3e14f7344d1cb31f128e6dbba70c5975c9e57896815dbb1988ad/mysqlclient-1.3.13.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/h3/sff7td1d6pg5v5qsm5xf31q80000gn/T/pip-install-ki9z7ln9/mysqlclient/setup.py", line 18, in <module>
        metadata, options = get_config()
      File "/private/var/folders/h3/sff7td1d6pg5v5qsm5xf31q80000gn/T/pip-install-ki9z7ln9/mysqlclient/setup_posix.py", line 60, in get_config
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/h3/sff7td1d6pg5v5qsm5xf31q80000gn/T/pip-install-ki9z7ln9/mysqlclient/setup_posix.py", line 60, in <listcomp>
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/h3/sff7td1d6pg5v5qsm5xf31q80000gn/T/pip-install-ki9z7ln9/mysqlclient/setup_posix.py", line 13, in dequote
        raise Exception("Wrong MySQL configuration: …

如何在mac中导入和导出mysql转储文件

就像在Windows中一样,我使用这段代码:

mysqldump -u root -p --databases DBname>d:\ FILENAME.sql

但它在mac终端中不起作用.它会产生错误:

-bash: mysqldump: command not found

我正在编写一个简单的脚本来将当前的工作目录更改为其他目录.以下脚本可以正常工作,直到程序终止,之后我回到我的主目录.

#!/usr/bin/python

import os

if __name__ == '__main__':
    os.chdir("/home/name/projects/python")
    os.system("pwd")
    print 'dir changed'

输出是:

bash:~$ python chdir.py
/home/name/projects/python
dir changed
bash:~$ pwd
/home/name

我希望目录更改在程序退出后仍然保留.有什么想法怎么做？

编辑:我真正想要做的是:我经常使用这个目录,而不是cd <path>每次打开终端时,我只是写./progname,它改变了目录.

当我尝试这样做时heroku pg:pull DATABASE_URL myappspassword,我收到此错误:

my-computer:a-folder (master*) · heroku pg:pull DATABASE_URL myappspassword
 !    sh: createdb: command not found
 !    
 !    Unable to create new local database. Ensure your local Postgres is working and try again.

一旦谷歌搜索没有返回结果.我想知道这是否与我这样做有关which psql,没有结果.也许我需要用pgAdmin来做一些特别的工作(例如导出命令行工具)？