dosage/scripts/removeafter.py

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Python
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#!/usr/bin/env python
"""Remove all lines after a given marker line.
"""
from __future__ import print_function
import fileinput
import sys
def main(args):
filename = args[0]
marker = args[1]
for line in fileinput.input(filename, inplace=1):
print(line.rstrip())
if line.startswith(marker):
break
if __name__ == '__main__':
main(sys.argv[1:])