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1 | #!/bin/bash | |
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2 | # | |
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3 | # wait up to TIMEOUT seconds until a WAIT_ON_FILE is created. | |
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4 | # | |
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5 | # In addition, this script can create CREATE_FILE once it is ready to wait. | |
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6 | ||
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7 | if [ $# -lt 2 ] || [ $# -gt 3 ]; then | |
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8 | echo $# | |
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9 | echo "USAGE: $0 TIMEOUT WAIT_ON_FILE [CREATE_FILE]" | |
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10 | fi | |
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11 | ||
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12 | timer="$1" | |
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13 | wait_on="$2" | |
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14 | create="" | |
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15 | if [ $# -eq 3 ]; then | |
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16 | create="$3" | |
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17 | fi | |
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18 | ||
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19 | if [ -n "$create" ]; | |
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20 | then | |
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21 | touch "$create" | |
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22 | create="" | |
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23 | fi | |
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24 | while [ "$timer" -gt 0 ] && [ ! -f "$wait_on" ]; | |
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25 | do | |
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26 | timer=$(( timer - 1)) | |
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27 | sleep 0.01 | |
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28 | done | |
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29 | if [ "$timer" -le 0 ]; then | |
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30 | echo "file not created after $1 seconds: $wait_on" >&2 | |
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31 | exit 1 | |
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32 | fi | |
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