我在我的主目录中安装了两个python 2.7.3
one is for Linux: /home/luban/Linux/Python/2.7.3
another is for Solaris: /home/luban/SunOS/Python/2.7.3
然后我在/ home / luban / bin中创建一个名为“python”的包装器,当我在不同的系统上工作时调用不同的python。
[luban @ lunbanworks 1]〜> cat / home / luban / bin / python
#!/bin/sh
CMD=`basename $0`
OS=`uname -s`
CMD_PATH="/home/luban/$OS/Python/2.7.3/bin"
if [ -x "${CMD_PATH}/${CMD}" ];then
export PATH="${CMD_PATH}:${PATH}"
exec ${CMD_PATH}/${CMD} ${1+"$@"}
else
echo "${CMD} is not available for ${OS}" 1>&2
exit 1
fi
[luban@lunbanworks 2] `ls -l /home/luban/bin/python`
-rwxrwxr-x 1 luban lunban 221 Apr 5 19:11 python*
我使用下面的脚本来测试包装器/home/luban/bin/python
[luban@lunbanworks 3] ~ > cat myscript.py
#!/home/luban/bin/python
myname="lunban"
print "myname is %s" % myname
[luban@lunbanworks 4] chmod +x myscript.py
我想使用./ run myscript.py
[luban@lunbanworks 5] ~ >./myscript.py
myname=luban: Command not found.
lpr: Unable to access "myname" - No such file or directory
使用/home/luban/bin/python myscript.py
可以工作:
[luban@lunbanworks 5] ~ > `/home/luban/bin/python myscript.py`
myname is luban
将shebang行更改为#!/home/luban/Linux/Python/2.7.3/bin/python
后,使用./
可以执行脚本。
[luban@lunbanworks 6] ~ >cat myscript.py
#!/home/luban/Linux/Python/2.7.3/bin/python
myname="lunban"
print "myname is %s" % myname
[luban@lunbanworks 7] ~ >./myscript.py
myname is luban
为什么当我在myscript.py的开头使用#!/home/luban/Linux/Python/2.7.3/bin/python
时,./myscript.py
可以正常工作,
但是如果我在我的python脚本中使用包装器#!/home/luban/bin/python
,使用./
来运行脚本,它不能工作吗?
当我只在#!/home/luban/bin/python
下为Linux安装python时,我使用了许多脚本#!/home/luban/
,它们可以使用./
运行,我不想更改它们,
那么,如何让./
运行python脚本如果我想保留包装器#!/home/luban/bin/python
作为shebang线?
DEIT:
./myscript.py
无法使用#!/home/luban/bin/python
下的包装CentOS 5.4, Bash 3.2.25
今天,我在CentOS 6.4, Bash 4.1.2
下面进行了测试:
我添加了
echo '$0 =' $0
echo '${COMMAND_PATH}/${COMMAND} ${1+"$@"} =' ${COMMAND_PATH}/${COMMAND} ${1+"$@"}
进入要跟踪的包装#!/home/luban/bin/python
。
./myscript.py
适用于包装器#!/home/luban/bin/python
[luban@lunbanworks 20] ./myscript.py
$0 = /home/luban/bin/python
${COMMAND_PATH}/${COMMAND} ${1+"$@"} = /home/luban/Linux/Python/2.7.3/bin/python ./myscript.py
myname is luban
所以我认为当我使用包装器./
时,它可能是#!/home/luban/bin/python
的Bash 3.2.25错误?
答案 0 :(得分:5)
您是否考虑过:
#!/usr/bin/env python
这通常对我有用,只要在搜索路径中找到python。
在您的情况下,您希望您的个人资料在个人资料设置中具有以下内容:
# Adjust for your preferred shell
export PATH=/home/luban/Linux/Python/2.7.3:/home/luban/SunOS/Python/2.7.3:$PATH
然后,当你的python脚本以“#!/ usr / bin / env python”shebang运行时,它会为你找到合适的python。