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Forum: Shell Programming and Scripting 01-10-2013

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try:
awk '
{n=$0;sub(".*=", "", n);n+=0}
!a[$1] {mx[$1]=n}
{a[$1]=$0; if (n>=mx[$1]) {mx[$1]=n; o[$1]=$0}}
END {for (i in o) print o[i]}
' input

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