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annotate bin/ix.sh @ 88:464d2dfb99c9

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author Henry S. Thompson <ht@inf.ed.ac.uk>
date Tue, 13 Apr 2021 17:02:09 +0000
parents
children 90f8f28b2e51
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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88
Henry S. Thompson <ht@inf.ed.ac.uk>
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1 #!/usr/bin/bash
Henry S. Thompson <ht@inf.ed.ac.uk>
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2 # Extract records from warc files given filename, length and offset triples
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3 # from stdin or as command line args
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4 if [ -n "$1" ]
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5 then
Henry S. Thompson <ht@inf.ed.ac.uk>
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6 printf "%s\t%s\t%s\n" "$1" "$2" "$3"
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7 else
Henry S. Thompson <ht@inf.ed.ac.uk>
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8 cat
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9 fi | \
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10 while { IFS=$'\t' read f l o; }
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11 do
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12 dd if="$f" of=/dev/stdout skip=$o count=$l iflag=skip_bytes,count_bytes
Henry S. Thompson <ht@inf.ed.ac.uk>
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13 done | unpigz -dp 1 -c