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can you explain to me please what does it mean this command ${a:16} ? because i'm new in shell script :(

thanks very much also for your help

Thank you very much for your help!! it works :)

Hi all,
I wrote one code and i face some difficulties to exclude some characters from the echo command

more specifically the last command is

echo $a "${RESULT}" >> results_data_srcip

the...

Hello,
I'm new member of shell scripting and i face some difficulties. To begin, i try to write an algorithm that calculate from one directory containing nfdump files (288) the entropy of one day...