I'm trying to do a simple script, but I don't get how to pass a variable to the command that I need:
#!/bin/bash
for i in 1 2 3
do
python -c 'print "a"*' $i
done
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3 Answers
If you really want to go on with your solution using python -c, you would have to remove the space:
#!/bin/bash
for i in 1 2 3
do
python -c 'print "a"*'$i
done
But the approach suggested by Asmox makes more sense to me (and it has nothing to do with the question where you pipe the standard output to).
2 Comments
Konrad Rudolph
You absolutely do not have to remove the space. You just have to quote the whole argument.
user1934428
This is also one possibility. I suggested to remove the space, because this requires the least changes to the original code, compared to
python -c "print 'a'* $i".Maybe this topic will help: How do I run Python script using arguments in windows command line
Have you considered making a whole script? Like this one:
import sys
def f(a):
print a
if __name__ == "__main__":
a = int(sys.argv[1])
f(a)
This example might seem overcomplicated, but I wanted to show you how to pass parameter from console to function
1 Comment
neorus
i need this to pipe to another file, the whole line would be something like "python -c 'print "a"* $i ' | ./example "
I have tried the solution provided above and had to modify for python3+
due to lack of sufficient points I am not allowed to make a comment, thats why I posted my solution separately
#!/bin/bash
for i in {1..3}
do
python -c "print ('a'* ${i})"
done
output~>
a
aa
aaa
