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Parse for 2 numbers in large single line

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# 8  
Old 08-26-2018
Quote:
Originally Posted by hburnswell
If there is something really wrong with this approach

Code:
synced_flush () {

        $curl -s -u ${creds} -X POST "localhost:9200/_flush/synced" | \
        grep -Eo "shards[^}]*failed\":[0-9]*" | \
        sed -e 's/.*://'

}

Not "really wrong", but you can optimise a bit. Change:

Code:
        $curl -s -u ${creds} -X POST "localhost:9200/_flush/synced" | \
        grep -Eo "shards[^}]*failed\":[0-9]*" | \
        sed -e 's/.*://'

to

Code:
        $curl -s -u ${creds} -X POST "localhost:9200/_flush/synced" | \
        sed -n ' /^{"_shards.*failed":[0-9]/ {
                            s/.*failed://
                            s/\([0-9]*\).*/\1/p
                   }'

as sed can do everything grep is able to do, so you need only one of them. Usually this doesn't make a big difference but if the combination is called many times over the one saved process amounts to some considerably less time needed.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
hburnswell
# 9  
Old 08-29-2018
bakunin - thank you for the suggestion..

As mentioned, these are the small tweaks that I look for as my scripts mature ;-)..

I appreciate the guidance..
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