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@ -21,14 +21,16 @@ check_version() { |
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local httpHeader=$(curl -R -I $1 2>&1 | grep 'Last-Modified:') |
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local httpHeader=$(curl -R -I $1 2>&1 | grep 'Last-Modified:') |
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# Checks if field "Last-Modified" exists in HTTP header and transform it into timestamp string |
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# Checks if field "Last-Modified" exists in HTTP header and transform it into timestamp string |
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# if that field is not present, return current timestamp |
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# if that field is not present, return current timestamp |
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if [ -z "$httpHeader" ] |
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local dateVersionFormat="%Y%m%d%H%S" |
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local dateString=$(date +"$dateVersionFormat") |
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if [ ! -z "$httpHeader" ] |
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then |
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then |
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# echo "Last-Modified information not returned for targeted file. Using current date's timestamp as version number." |
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local dateString=$(date) |
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else |
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# echo "$httpHeader" |
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local dateString=$(echo "$httpHeader" | sed -e "s/Last-Modified: //" | cut -d',' -f 2) |
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# echo "Last-Modified information returned for targeted file. Extract date, removing day of the week string |
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local tmpDateString=$(echo "$httpHeader" | sed -e "s/Last-Modified: //" | cut -d',' -f 2) |
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# rfc1123Format="%d\ %b\ %Y\ %H:%M:%S\ GMT" - in order to work in boot2docker, it has to be outside of quotes in the command below |
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local dateString=$(date +"$dateVersionFormat" -D %d\ %b\ %Y\ %H:%M:%S\ GMT -d "$tmpDateString") |
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fi |
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fi |
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date +"%Y%m%d%H%S" -d "$dateString" |
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echo "$dateString" |
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} |
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} |