Created
August 25, 2017 11:19
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split a file into pieces but keep a common header of first n lines
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#!/bin/bash | |
export SPLIT_header_n=$1 | |
target_size=$2 | |
export SPLIT_input_file=$3 | |
target_wo_header=$(( "$target_size" - "$SPLIT_header_n" )) | |
[[ -n $SPLIT_input_file ]] || { | |
echo "usage: $(basename "$0") SPLIT_header_n target_n SPLIT_input_file" >&2 | |
exit 1 | |
} | |
function my_header { | |
head -n "$SPLIT_header_n" "$SPLIT_input_file" | |
cat | |
} | |
export -f my_header | |
sed "1,${SPLIT_header_n}d" "$SPLIT_input_file" | | |
split \ | |
-d \ | |
-l "$target_wo_header" \ | |
--filter='my_header > $FILE' \ | |
- "$(basename "$SPLIT_input_file")." |
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