linux - Bash column altering -


i have data in columns, data confusing column numbers making bash opperations confusing, data below working (however there on 1 million lines of). interested in numbers in 8th , 9th column:

2014-05-10 08:47:57.373  3600.633 udp      114.31.255.90:57844 ->      42.209.2.47:52436    1.3 m    1.8 g     1 2014-05-10 09:50:39.609  3601.385 udp      114.31.255.90:57844 ->   60.120.101.149:47403    1.0 m    1.5 g     1 2014-05-10 10:00:14.064  3607.106 udp      114.31.255.90:57844 ->    46.83.205.250:32307    2.0 m    3.0 g     1 2014-05-10 10:03:04.263  3644.192 udp      114.31.255.90:57844 ->       1.32.33.64:10933   987743    1.4 g     1 2014-05-10 11:07:16.247   546.764 tcp      105.51.244.36:80    ->   114.31.255.222:55580   797919    1.2 g     1 2014-05-10 10:46:15.190  2332.334 udp      114.31.255.90:57844 ->     43.95.27.215:53394    1.1 m    1.7 g     1 2014-05-10 11:00:49.005  1458.456 udp      114.31.255.90:57844 ->   39.150.172.138:39326    1.2 m    1.7 g     1 2014-05-09 23:53:03.625    56.271 icmp    61.114.116.140:3     ->    114.31.255.88:0.3          2      318     1 2014-05-09 23:53:59.833     0.000 udp      114.31.255.88:15360 ->    24.56.237.230:24752        1      131     1 2014-05-09 23:53:59.835     0.000 udp      114.31.255.88:15360 ->    154.115.89.25:28904        1      131     1 2014-05-09 23:53:59.767     0.174 tcp      105.51.244.40:80    ->    114.31.255.41:28520       13     6675     1 2014-05-09 23:53:59.409     0.000 udp      114.31.255.70:53    ->   114.31.255.244:54604        1      536     1 2014-05-09 23:53:59.621     0.333 tcp      105.51.244.40:80    ->    114.31.255.41:28519       16     7034     1

i use tr make data processing easier turning spaces one:

tr -s ' '

which makes using (below) easier:

cut -f [column number(s)] -d ' '

however when value has g or m confuses colum numbering. change example:

2014-05-10 11:00:49.005  1458.456 udp      114.31.255.90:57844 ->   39.150.172.138:39326    1.2 m    1.7 g   1

to

2014-05-10 11:00:49.005  1458.456 udp      114.31.255.90:57844 ->   39.150.172.138:39326    1.2m    1.7g   1

i have tried

tr ' g ' 'g ' tr ' m ' 'm '

also using [:space:] in different configurations have not succeeded.

tr doesn't work sed translates character characters. use sed this:

sed 's/ \([mg] \)/\1/g'

explanation:

/ \([mg] \)/  # match space followed letter m or g , followed space.               # capture matched letter in matched group #1 \1            # replace back-reference #1

-

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