clean history
for the commit history of this git project, see the history-master branch.
This commit is contained in:
216
tar1090.sh
Executable file
216
tar1090.sh
Executable file
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#!/bin/bash
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trap "exit" INT TERM
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trap "kill 0" EXIT
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trap 'echo ERROR on line number $LINENO' ERR
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#set -e
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RUN_DIR=$1
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SRC_DIR=$2
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INTERVAL=$3
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HISTORY_SIZE=$4
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CHUNK_SIZE=$5
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ENABLE_978=$6
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URL_978=$7
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INT_978=$8
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PF_URL=$9
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COMPRESS_978=${10}
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if ! [[ -d $RUN_DIR && -d $SRC_DIR ]]
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then
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echo "runtime directory or source directory are not specified or not directories, fatal error!"
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echo "minimal Syntax: bash tar1090.sh <runtime directory> <dump1090 source directory>"
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echo "Syntax: bash tar1090.sh <runtime directory> <dump1090 source directory> <history interval> <history size> <chunk size> <enable 978 yes/no> <URL for 978 aircraft.json> <interval 978 is updated>"
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exit 1
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fi
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if [[ -z $HISTORY_SIZE || -z $INTERVAL || -z $CHUNK_SIZE ]]
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then
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echo "Syntax: bash tar1090.sh <runtime directory> <dump1090 source directory> <history interval> <history size> <chunk size> <enable 978 yes/no> <URL for 978 aircraft.json> <interval 978 is updated>"
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echo "Missing some settings from environment variables, using defaults:"
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echo "history interval: 8 seconds"
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echo "history size: 450 entries"
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echo "chunk size: 60 entries"
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INTERVAL=8
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HISTORY_SIZE=450
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CHUNK_SIZE=60
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fi
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if [[ -z $URL_978 ]]; then
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ENABLE_978=no
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fi
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if [[ -z $INT_978 ]]; then
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INT_978=1
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fi
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hist=$((HISTORY_SIZE))
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chunks=$(( hist/CHUNK_SIZE + 1 ))
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#increase chunk size to get history size as close as we can
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CHUNK_SIZE=$(( CHUNK_SIZE - ( (CHUNK_SIZE - hist % CHUNK_SIZE)/chunks ) ))
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new_chunk() {
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if [[ $1 != "refresh" ]]; then
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cur_chunk="chunk_$(date +%s%N | head -c-7).gz"
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echo "$cur_chunk" >> chunk_list
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cp "$1" "$cur_chunk"
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fi
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for iterator in $(head -n-$chunks chunk_list); do rm -f "$RUN_DIR/$iterator"; done
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tail -n$chunks chunk_list > chunk_list.tmp
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mv chunk_list.tmp chunk_list
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# construct chunks.json
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JSON='{'
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if [ -f pf.json ]; then JSON="$JSON"' "pf_data": "true",'; fi
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if [[ "$ENABLE_978" == "yes" ]]; then JSON="$JSON"' "enable_uat": "true",'; fi
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JSON="$JSON"' "chunks": [ '
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JSON="$JSON""$(while read -r i; do echo -n "\"$i\", "; done < chunk_list)"
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JSON="$JSON"' "current_large.gz", "current_small.gz" ] }'
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echo "$JSON" > "$RUN_DIR/chunks.json"
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}
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prune() {
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jq -c <"$1" >"$2" '
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.aircraft |= map(select(has("seen") and .seen < 15))
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| .aircraft[] |= [.hex,
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(if .alt_baro != null then .alt_baro elif .altitude != null then .altitude else .alt_geom end),
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(if .gs != null then .gs else .tas end),
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.track, .lat, .lon, .seen_pos,
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(if .mlat != null and (.mlat | contains(["lat"])) then "mlat"
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elif .tisb != null and (.tisb | contains(["lat"])) then "tisb" else .type end),
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.flight, .messages]
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'
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}
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while true
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do
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cd "$RUN_DIR" || { sleep 30; continue; }
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rm -f chunk_list ./chunk_*.gz ./current_*.gz history_*.json latest_*.json || true
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echo "{ \"files\" : [ ] }" | gzip -1 > empty.gz
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cp empty.gz current_small.gz
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cp empty.gz current_large.gz
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# integrate original dump1090-fa history on startup so we don't start blank
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for i in "$SRC_DIR"/history_*.json
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do
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FILE=$(basename "$i")
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if prune "$i" "$FILE"; then
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sed -i -e '$a,' "$FILE"
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fi
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done
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if sed -e '1i{ "files" : [' -e '$a]}' -e '$d' history_*.json | 7za a -si temp.gz >/dev/null; then
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new_chunk temp.gz
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else
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new_chunk empty.gz
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fi
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# cleanup
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rm -f history_*.json
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i=0
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while [ -f chunks.json ]
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do
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cd "$RUN_DIR" || { sleep 30; continue; }
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sleep $INTERVAL &
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if ! [ -f empty.gz ]; then
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echo "{ \"files\" : [ ] }" | gzip -1 > empty.gz
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fi
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date=$(date +%s%N | head -c-7)
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if prune "$SRC_DIR/aircraft.json" "history_$date.json" ||
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{ sleep 0.1 && prune "$SRC_DIR/aircraft.json" "history_$date.json"; }
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then
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sed -i -e '$a,' "history_$date.json"
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else
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echo "No aircraft.json found in $SRC_DIR! Try restarting dump1090!"
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sleep 60
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continue
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fi
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if [[ $ENABLE_978 == "yes" ]] && prune 978.json "history_978_$date.json"; then
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sed -i -e '$a,' "history_978_$date.json"
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fi
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if [[ $((i%6)) == 5 ]]
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then
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sed -e '1i{ "files" : [' -e '$a]}' -e '$d' history_*.json | gzip -4 > temp.gz
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mv temp.gz current_large.gz
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cp empty.gz current_small.gz
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rm -f latest_*.json
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else
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if [ -f "history_$date.json" ]; then
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ln -s "history_$date.json" "latest_$date.json"
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fi
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if [[ $ENABLE_978 == "yes" ]] && [ -f "history_978_$date.json" ]; then
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ln -s "history_978_$date.json" "latest_978_$date.json" || true
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fi
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sed -e '1i{ "files" : [' -e '$a]}' -e '$d' latest_*.json | gzip -1 > temp.gz
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mv temp.gz current_small.gz
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fi
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i=$((i+1))
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if [[ $i == "$CHUNK_SIZE" ]]
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then
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sed -e '1i{ "files" : [' -e '$a]}' -e '$d' history_*.json | 7za a -si temp.gz >/dev/null
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new_chunk temp.gz
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cp empty.gz current_small.gz
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cp empty.gz current_large.gz
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i=0
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rm -f history_*.json latest_*.json
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fi
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wait
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done
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echo "$RUN_DIR/chunks.json was corrupted or removed, restarting history chunk creation!"
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done &
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if [[ $(echo "$URL_978" | head -c7) == "FILE://" ]]; then
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COMMAND_978="cp $(echo -n "$URL_978" | tail -c+8) 978.tmp"
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else
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COMMAND_978="wget -T 5 -q -O 978.tmp $URL_978/data/aircraft.json $COMPRESS_978"
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fi
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if [[ $ENABLE_978 == "yes" ]]; then
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while true
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do
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sleep $INT_978 &
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if cd "$RUN_DIR" && $COMMAND_978; then
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sed -i -e 's/"now" \?:/"uat_978":"true","now":/' 978.tmp
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mv 978.tmp 978.json
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fi
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wait
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done &
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fi
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sleep 10
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if [[ -n $PF_URL ]]; then
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TMP="/tmp/tar1090-tmp.pf.json.$RANDOM$RANDOM"
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while true
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do
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sleep 10 &
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if cd "$RUN_DIR" && wget -T 5 -q -O $TMP "$PF_URL" &>/dev/null; then
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sed -i -e 's/"user_l[a-z]*":"[0-9,.,-]*",//g' $TMP
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mv $TMP pf.json
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if ! grep -qs -e pf_data chunks.json; then
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new_chunk refresh
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fi
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else
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rm $TMP
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sleep 120
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fi
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wait
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done &
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fi
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wait -n
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