Как рассчитать длину пароля, если пользователь уже существует в Linux?

сэдвзломать:

sed -E -e 's/\[([0-9],){5}[0-9]\][0-9]+/}{/g; s/([[:alnum:]]+)=([[:alnum:]]+)/"\1" : "\2",/; 
           s/,\n}/}/;  1s/.*/{/; $s/.*/&}/' yourfile | sed -Ez 's/,\n?}/ }\n/g'

Выход:

{
"enable" : "1",
"interval" : "10",
"action" : "0" }
{
"ipAddress" : "3232235848",
"macAddress" : "EC",:0E:C4:4F:XX:XX
"totalPkts" : "201",
"totalBytes" : "22914",
"currPkts" : "0",
"currBytes" : "0",
"currIcmp" : "0",
"currUdp" : "0",
"currSyn" : "0",
"currIcmpMax" : "0",
"currUdpMax" : "15",
"currSynMax" : "0" }
{
"ipAddress" : "3232235829",
"macAddress" : "00",:16:E8:22:XX:XX
"totalPkts" : "972",
"totalBytes" : "98730",
"currPkts" : "0",
"currBytes" : "0",
"currIcmp" : "0",
"currUdp" : "0",
"currSyn" : "0",
"currIcmpMax" : "0",
"currUdpMax" : "14",
"currSynMax" : "4" }
{
"ipAddress" : "3232235842",
"macAddress" : "70",:14:A6:8B:XX:XX
"totalPkts" : "154566",
"totalBytes" : "15116490",
"currPkts" : "0",
"currBytes" : "0",
"currIcmp" : "0",
"currUdp" : "0",
"currSyn" : "0",
"currIcmpMax" : "9",
"currUdpMax" : "58",
"currSynMax" : "60" }