bash function implement python command
I have this
python -c "import sys, urllib as ul;
print ul.quote('sample hihi ')"
How can I wrap it into a bash function, so I can call it like a function like so:
urlencode('sample hihi ')
Thanks
bash functions
asked 6 hours ago
Born vs. MeBorn vs. Me
82
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I have this
python -c "import sys, urllib as ul;
print ul.quote('sample hihi ')"
How can I wrap it into a bash function, so I can call it like a function like so:
urlencode('sample hihi ')
Thanks
bash functions
asked 6 hours ago
Born vs. MeBorn vs. Me
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago
add a comment |
I have this
python -c "import sys, urllib as ul;
print ul.quote('sample hihi ')"
How can I wrap it into a bash function, so I can call it like a function like so:
urlencode('sample hihi ')
Thanks
bash functions
asked 6 hours ago
Born vs. MeBorn vs. Me
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have this
python -c "import sys, urllib as ul;
print ul.quote('sample hihi ')"
How can I wrap it into a bash function, so I can call it like a function like so:
urlencode('sample hihi ')
Thanks
bash functions
bash functions
asked 6 hours ago
Born vs. MeBorn vs. Me
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 hours ago
Born vs. MeBorn vs. Me
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 hours ago
Born vs. MeBorn vs. Me
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 hours ago
Born vs. MeBorn vs. Me
82
asked 6 hours ago
Born vs. MeBorn vs. Me
82
82
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Born vs. Me is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago
add a comment |
1
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago
1
1
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago
add a comment |
1 Answer
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votes
You should pass the function arguments into your Python code as regular shell arguments, which can be accessed there through the sys.argv array. In the Bash function, its call arguments can be accessed e.g. through "$*", which returns all arguments as a single, space separated string argument (as if it were quoted as a whole, not separate tokens).
Here's an example that follows your original code:
urlquote() { python -c 'import sys, urllib as ul; print ul.quote(sys.argv[1])' "$*" ;}
However, as Python 2 support will end soon, here's the better Python 3 equivalent:
urlquote() { python3 -c 'import sys, urllib.parse as ul; print(ul.quote(sys.argv[1]))' "$*" ;}
The invocation is the same for both, type the function name followed by the string you want to encode as argument. Don't forget to quote it appropriately:
$ urlquote "roses are red, violets are blue..."
roses%20are%20red%2C%20violets%20are%20blue...
Note: Don't ever directly inject shell arguments into your Python code string, like python -c "print('$x')", as this could lead to easily exploitable security risks if you ever plan to run your function on untrusted input, allowing people to run arbitrary commands!
Have a look at this shell example, where I craft the argument in the variable x in a way to run the system command uname (which is harmless and just prints "Linux", but you can do everything here):
$ x="');import os;os.system('uname');('"
$ python3 -c "print('$x')"
Linux
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
add a comment |
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You should pass the function arguments into your Python code as regular shell arguments, which can be accessed there through the sys.argv array. In the Bash function, its call arguments can be accessed e.g. through "$*", which returns all arguments as a single, space separated string argument (as if it were quoted as a whole, not separate tokens).
Here's an example that follows your original code:
urlquote() { python -c 'import sys, urllib as ul; print ul.quote(sys.argv[1])' "$*" ;}
However, as Python 2 support will end soon, here's the better Python 3 equivalent:
urlquote() { python3 -c 'import sys, urllib.parse as ul; print(ul.quote(sys.argv[1]))' "$*" ;}
The invocation is the same for both, type the function name followed by the string you want to encode as argument. Don't forget to quote it appropriately:
$ urlquote "roses are red, violets are blue..."
roses%20are%20red%2C%20violets%20are%20blue...
Note: Don't ever directly inject shell arguments into your Python code string, like python -c "print('$x')", as this could lead to easily exploitable security risks if you ever plan to run your function on untrusted input, allowing people to run arbitrary commands!
Have a look at this shell example, where I craft the argument in the variable x in a way to run the system command uname (which is harmless and just prints "Linux", but you can do everything here):
$ x="');import os;os.system('uname');('"
$ python3 -c "print('$x')"
Linux
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
add a comment |
You should pass the function arguments into your Python code as regular shell arguments, which can be accessed there through the sys.argv array. In the Bash function, its call arguments can be accessed e.g. through "$*", which returns all arguments as a single, space separated string argument (as if it were quoted as a whole, not separate tokens).
Here's an example that follows your original code:
urlquote() { python -c 'import sys, urllib as ul; print ul.quote(sys.argv[1])' "$*" ;}
However, as Python 2 support will end soon, here's the better Python 3 equivalent:
urlquote() { python3 -c 'import sys, urllib.parse as ul; print(ul.quote(sys.argv[1]))' "$*" ;}
The invocation is the same for both, type the function name followed by the string you want to encode as argument. Don't forget to quote it appropriately:
$ urlquote "roses are red, violets are blue..."
roses%20are%20red%2C%20violets%20are%20blue...
Note: Don't ever directly inject shell arguments into your Python code string, like python -c "print('$x')", as this could lead to easily exploitable security risks if you ever plan to run your function on untrusted input, allowing people to run arbitrary commands!
Have a look at this shell example, where I craft the argument in the variable x in a way to run the system command uname (which is harmless and just prints "Linux", but you can do everything here):
$ x="');import os;os.system('uname');('"
$ python3 -c "print('$x')"
Linux
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
add a comment |
You should pass the function arguments into your Python code as regular shell arguments, which can be accessed there through the sys.argv array. In the Bash function, its call arguments can be accessed e.g. through "$*", which returns all arguments as a single, space separated string argument (as if it were quoted as a whole, not separate tokens).
Here's an example that follows your original code:
urlquote() { python -c 'import sys, urllib as ul; print ul.quote(sys.argv[1])' "$*" ;}
However, as Python 2 support will end soon, here's the better Python 3 equivalent:
urlquote() { python3 -c 'import sys, urllib.parse as ul; print(ul.quote(sys.argv[1]))' "$*" ;}
The invocation is the same for both, type the function name followed by the string you want to encode as argument. Don't forget to quote it appropriately:
$ urlquote "roses are red, violets are blue..."
roses%20are%20red%2C%20violets%20are%20blue...
Note: Don't ever directly inject shell arguments into your Python code string, like python -c "print('$x')", as this could lead to easily exploitable security risks if you ever plan to run your function on untrusted input, allowing people to run arbitrary commands!
Have a look at this shell example, where I craft the argument in the variable x in a way to run the system command uname (which is harmless and just prints "Linux", but you can do everything here):
$ x="');import os;os.system('uname');('"
$ python3 -c "print('$x')"
Linux
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
You should pass the function arguments into your Python code as regular shell arguments, which can be accessed there through the sys.argv array. In the Bash function, its call arguments can be accessed e.g. through "$*", which returns all arguments as a single, space separated string argument (as if it were quoted as a whole, not separate tokens).
Here's an example that follows your original code:
urlquote() { python -c 'import sys, urllib as ul; print ul.quote(sys.argv[1])' "$*" ;}
However, as Python 2 support will end soon, here's the better Python 3 equivalent:
urlquote() { python3 -c 'import sys, urllib.parse as ul; print(ul.quote(sys.argv[1]))' "$*" ;}
The invocation is the same for both, type the function name followed by the string you want to encode as argument. Don't forget to quote it appropriately:
$ urlquote "roses are red, violets are blue..."
roses%20are%20red%2C%20violets%20are%20blue...
Note: Don't ever directly inject shell arguments into your Python code string, like python -c "print('$x')", as this could lead to easily exploitable security risks if you ever plan to run your function on untrusted input, allowing people to run arbitrary commands!
Have a look at this shell example, where I craft the argument in the variable x in a way to run the system command uname (which is harmless and just prints "Linux", but you can do everything here):
$ x="');import os;os.system('uname');('"
$ python3 -c "print('$x')"
Linux
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
answered 5 hours ago
Byte CommanderByte Commander
63.5k26172290
63.5k26172290
add a comment |
add a comment |
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1
This question should asked on stackoverflow, the possibility to receive an answer is higher then here.
– AtomiX84
6 hours ago