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I am trying to parse a log file, where I would like to get the first column and the text which follows a pattern.

The log file would look like this,

2018-04-25 00:00:10,139 INFO  [HiveServer2-HttpHandler-Pool: Thread-2678420]: parse.ParseDriver (ParseDriver.java:parse(185)) - Parsing command: show databases

I would like the final output which contains timestamp ( first and second column ) and all commands which is followed by keyword command:.

Is there a clean way of getting this? Currently, my plan is to use awk to fetch columns 1 and 2. Use sed to get the commands and then to merge the two outputs to a new file.

  • This seems a log from tomcat/wildfly you can alternativelly export it with with open office calc and the colums will be sorted for you. Else show me some code so I can help. – vfbsilva Apr 30 '18 at 4:05
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This should do

awk -F'(,|command:)' '{print $1, $NF}' infile
2018-04-25 00:00:10  show databases

Here we defined field separators either a comma , or string command:, then print the first and last fields.

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You can also do it with cut:

cut -d' ' -f1,2,12- ${YOUR_LOG_FILE}

Or (safer):

cat ${YOUR_LOG_FILE} | tr -s " " | cut -d' ' -f1,2,11-

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