Monday, October 30, 2017

Concatenate multiple files with same headers (and only keep one header line in the output file) 

awk '
    FNR==1 && NR!=1 { while (/^<header>/) getline; }
    1 {print}
' file*.txt >all.txt
Note: the /^<header>/ part need to be changed to adapt to whatever the actual header is.

at

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