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1
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#!/bin/bash
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2
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# Sets a password environment variable
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3
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4
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self="$(readlink -f -- "$BASH_SOURCE")"
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5
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6
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noInstr=
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7
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test _"$1" = _- && { noInstr=1; shift;}
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8
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9
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test "$#" -ge 1 || \
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10
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{ echo "Usage: . $self env_var_name [msg] (note initial \".\")" >&2; exit 2;}
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11
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12
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msg="$2"
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13
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test -n "$msg" || msg="$1"
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14
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15
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function trace()
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16
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{
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17
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{ for arg in "$@"; do printf "%q " "$arg"; done; echo;} >&2
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18
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}
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19
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20
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if test -z "${!1+t}"; then # env var with name $1 is unset
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21
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if test -z "$noInstr"; then
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22
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echo "[7m To avoid having to reenter $msg password, run: [0m" >&2
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23
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trace . "$self" - "$@"
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24
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fi
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25
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read -s -p "Enter $msg password: "; echo
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26
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export "$1"="$REPLY"
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27
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fi
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