linux - Sum numbers in lines grouped in blocks with headers (with Bash and AWK) -

assuming have following example output:

node hostabc foofoofoo         1 foo         1 ...         1 ...         1 ...         1 ...         5 ... node hostcde ...         1 ...         10 ... 

how can sum of numbers each host (without using temporary files, , using bash , awk only)?

for example:

hostabc     10 hostcde     11 

you can use following awk command:

awk '/^node/{n=$2;next}{t[n]+=$1}end{for(n in t){print n,t[n]}}' file 

better explained multiline script:

# if line starts 'node' /^node/ {     # set n(ame) value of second field     n=$2     # no further actions on line     next } {     # add value of first field t(otals)[n(name)]     t[n]+=$1 } # once end of input has been reached end{     # iterate trough t(otals) keys     for(n in t) {         # print total along name         print n,t[n]     } }