linux - AWK string and value larger than -


i'm digging e-mail logs , want check e-mails exceeded specific size. practically, in log, have text 'size=' followed value. there way find values after word 'size=' exceed chosen limit ?

line examples:

sep  2 02:11:27 mailsys postfix/qmgr[2989]: f24c712000ba: from=<root@mail.ro>, size=462, nrcpt=1 (queue active)  sep  2 03:19:54 mailsys postfix/qmgr[2989]: 863ae1200097: from=<c.ivan@mail.ro>, size=554, nrcpt=1 (queue active)  sep  2 04:01:34 mailsys postfix/qmgr[2989]: a763712000ba: from=<nbounce-24-512645-898600-d25ee-bc28d1c8@nzadev.eu>, size=39992, nrcpt=1 (queue active)

i output new text file lines exceed 10mb (10485760 bytes).

assuming size= preceded space, do:

awk -v min_size=10000 '{ size = 0 } ; / size=[[:digit:]]/ { size = $0 ; sub( /^.* size=/, "", size ) ; sub( /[^[:digit:]].*$/, "", size ) ; size += 0 } ; size > min_size { print }' file

in details:

awk -v min_size '   {     # reset size new line     size = 0   }    # process line including size=   / size=[[:digit:]]/ {     size = $0     # removing before size=      sub( /^.* size=/, "", size )     # remove after digits     sub( /[^[:digit:]].*$/, "", size )     # convert size number     size += 0   }    size > min_size {     print   }' file

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