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#!/bin/bash
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# Shell script to generate random seeds
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# C.A., 16.4.2007
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TIME=`date +%s`
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SEED1=$(($TIME-1195555555))
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SEED2=$(($TIME-1195544444))
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SEED3=$(($TIME-1195533333))
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SEED4=$(($TIME-1195522222))
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if [ -z $1 ]; then
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FILE="crab.cfg"
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else
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FILE=$1
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fi
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cp -f $FILE $FILE.bkp
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if [ -e $FILE ]; then
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PREV_PY=`grep pythia_seed $FILE`
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PREV_VT=`grep vtx_seed $FILE`
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PREV_GE=`grep g4_seed $FILE`
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PREV_MI=`grep mix_seed $FILE`
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sed -e "s/$PREV_PY/pythia_seed = $SEED1/" $FILE.'bkp' > $FILE'.1'
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sed -e "s/$PREV_VT/vtx_seed = $SEED2/" $FILE'.1' > $FILE'.2'
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sed -e "s/$PREV_GE/g4_seed = $SEED3/" $FILE'.2' > $FILE'.3'
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sed -e "s/$PREV_MI/mix_seed = $SEED4/" $FILE'.3' > $FILE
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rm -f $FILE'.1' $FILE'.2' $FILE'.3' $FILE.bkp
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echo "SUCCESS! Used pythia_seed=$SEED1 , vtx_seed=$SEED2 , g4_seed=$SEED3 and mix_seed=$SEED4 in file $FILE"
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else
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echo "ERROR: you have no '$FILE' file"
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fi
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