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- #!/bin/bash
- for FILE_PATH; do
- # read first 20 bytes from file and exctract 11th and 12th bytes as hexadecimal value:
- HEAD_FLAGS="0x$(od -x -N20 "$FILE_PATH" | awk 'NR=1{print $7;exit}')"
- VOLUME_FLAG="0x0001"
- FIRST_FLAG="0x0100"
- if [ $(($HEAD_FLAGS&$VOLUME_FLAG)) -ne 0 ]; then # is volume
- if [ $(($HEAD_FLAGS&$FIRST_FLAG)) -ne 0 ]; then # is first volume
- echo "$FILE_PATH is the first volume"
- else
- echo "$FILE_PATH is NOT the first volume"
- fi
- else # is regular, single rar archive
- echo "$FILE_PATH is a regular, single RAR-file"
- fi
- done
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