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Calling shell functions with xargs
...rting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
Also, using retu...
How does Spring autowire by name when more than one matching bean is found?
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skaffmanskaffman
374k9292 gold badges779779 silver badges744744 bronze badges
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git rebase fatal: Needed a single revision
... HEAD?
– CB Bailey
Jan 25 '11 at 21:40
@Charles: up to date, v1.7.4-rc3! I'm not terribly eager to do a bisect looking...
Ruby on Rails: getting the max value from a DB column
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274
Assuming your model name is Bar and it has a column named bar, this should work:
Bar.maximum("b...
How to create a loop in bash that is waiting for a webserver to respond?
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174
Combining the question with chepner's answer, this worked for me:
until $(curl --output /dev/nu...
how to concatenate two dictionaries to create a new one in Python? [duplicate]
...items and call dict on the resulting list:
$ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \
'd4 = dict(d1.items() + d2.items() + d3.items())'
100000 loops, best of 3: 4.93 usec per loop
Fastest: exploit the dict constructor to the hilt, then one update:
$ python -mtimeit -s'd1...
How to check if a given directory exists in Ruby
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EmilyEmily
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Can an input field have two labels?
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answered May 13 '10 at 20:34
James SumnersJames Sumners
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What does git push origin HEAD mean?
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answered Apr 23 '14 at 10:08
hek2mglhek2mgl
126k1717 gold badges187187 silver badges215215 bronze badges
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How do I specify multiple targets in my podfile for my Xcode project?
I'm using CocoaPods with my Xcode 4 project and I have three targets for my project (the default, one for building a lite version and one for building a demo version). All the targets use the same libraries, but CocoaPods is only adding the static library and search paths to the primary target. My p...