Linux bash know the script path which includes library script -

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this question has answer here:

i have library script named , script b, c includes 

. ../../../a

the problem how can know time run ./b.sh or ./c.sh, example:

if(run ./b.sh)    echo "b (file path) calling" else    echo "c (file path) calling"

you can use $0 determine command executed:

a.sh:

echo $0

b.sh:

. ./a.sh

when run:

$ sh b.sh  b.sh $ sh a.sh  a.sh

it give command executed, not arguments:

$ sh b.sh 1 2 3 b.sh

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