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| 1 | #!/bin/bash | |
| 2 | ||
| 3 | for FILE_PATH; do | |
| 4 | - | HEAD_FLAGS="0x$(od -x -N20 "$FILE_PATH" | awk 'NR=1{print $7;exit}')" # read first 20 bytes from file
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| 4 | + | # read first 20 bytes from file and exctract 11th and 12th bytes as hexadecimal value: |
| 5 | HEAD_FLAGS="0x$(od -x -N20 "$FILE_PATH" | awk 'NR=1{print $7;exit}')"
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| 6 | VOLUME_FLAG="0x0001" | |
| 7 | FIRST_FLAG="0x0100" | |
| 8 | ||
| 9 | if [ $(($HEAD_FLAGS&$VOLUME_FLAG)) -ne 0 ]; then # is volume | |
| 10 | if [ $(($HEAD_FLAGS&$FIRST_FLAG)) -ne 0 ]; then # is first volume | |
| 11 | echo "$FILE_PATH is the first volume" | |
| 12 | else | |
| 13 | echo "$FILE_PATH is NOT the first volume" | |
| 14 | fi | |
| 15 | else # is regular, single rar archive | |
| 16 | echo "$FILE_PATH is a regular, single RAR-file" | |
| 17 | fi | |
| 18 | done |
