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1 | # Generate a sequence from m to n, m defaults to 1.
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2 |
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3 | seq ()
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4 | {
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5 | declare -i lo hi i # makes local
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6 | local _SEQ
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7 |
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8 | case $# in
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9 | 1) seq 1 "$1" ; return $? ;;
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10 | 2) lo=$1 hi=$2
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11 | i=$lo _SEQ=""
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12 | while let "i <= hi"; do
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13 | _SEQ="${_SEQ}$i "
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14 | let i+=1
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15 | done
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16 | echo "${_SEQ# }"
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17 | return 0 ;;
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18 | *) echo seq: usage: seq [low] high 1>&2 ; return 2 ;;
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19 | esac
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20 | }
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21 |
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22 | # like the APL `iota' function (or at least how I remember it :-)
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23 | iota()
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24 | {
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25 | case $# in
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26 | 1) seq 1 "$1"; return $?;;
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27 | *) echo "iota: usage: iota high" 1>&2; return 2;;
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28 | esac
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29 | }
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