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April 15, 2004
bash scripts sample - for loop v.s. xargs
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https://windtear.net/archives/2004/04/15/000305.html
-----> Demand:
getpoints 1.jpg 1.points
getpoints 2.jpg 2.points
...
% cat list.txt
1.jpg
2.jpg
...
-----> Solution:
1.
for i in `cat list.txt`;do ./getpoints $i $i.points;done
rename jpg.points points *.points
2.(by newclear)
cat list.txt | sed -e "s/\..*//" | xargs --replace ./getpoints {}.jpg {}.points
-----> Demo
% for i in `cat list.txt`;do echo $i $i.points;done
1.jpg 1.jpg.points
2.jpg 2.jpg.points
3.jpg 3.jpg.points
rename jpg.points points *.points
% cat list.txt | sed -e "s/\..*//" | xargs --replace echo {}.jpg {}.points
1.jpg 1.points
2.jpg 2.points
3.jpg 3.points
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Posted by windtear at April 15, 2004 6:17 PM
