語法:
type 2.txt
ESSID:"aaa"
Quality=2/70 Signal level=-93 dBm Noise level=-95 dBm
ESSID:"FON_AP"
Quality=34/70 Signal level=-62 dBm Noise level=-95 dBm
ESSID:"bbb"
Quality=12/70 Signal level=-83 dBm Noise level=-95 dBm
type 2.txt | sed -e "$!N;s/\n\(.*\)/\1/g" | gawk "{print $1,$2}" | sed -e "s/ESSID\:\"\(.*\)\" Quality=\(.*\)\/70/\2 \1/g" | sort | tail -n 1
34 FON_AP
type 2.txt | sed -e "$!N;s/\n\(.*\)/\1/g" | gawk "{print $2,$1}" | sed -e "s/Quality=\(.*\)\/70 ESSID\:\"\(.*\)\"/\2 \1/g;" | sort -r -k 2 | head -n 1
FON_AP 34
書籤