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#!/bin/sh
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################################################################################
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# Copyright 2019, Russell Adams <Russell.Adams@AdamsSystems.nl>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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######################################################################################
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# Merges multiple NMON files into a single NMON file for use with tools like nmonchart
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# Prints the new file to STDOUT, be sure to redirect the output
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# Uses the headers from the first file ONLY, disk names and adapters might not match
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# Print first file headers, stop at the first timestamp
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awk 'BEGIN {p=1} ; /^ZZZZ/ {p=0} ; p {print $0}' "$1"
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# Process all files, dynamically replacing all the timestamps into a new series
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awk 'BEGIN {FS=OFS="," ; curr=0} ;
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$1 == "ZZZZ" {curr+=1} ;
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$2 ~ "^T[0-9]{4}" {print $1, sprintf("T%04d",curr), substr($0, index($0,$3))}' \
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"$@"
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