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#!/bin/sh
# This files is part of uClibc.
# Distributed under the terms of the Lesser GNU General Public License v2
#
# Closely (not perfectly) emulate the behavior of glibc's getent utility
#
#passwd|shadow|group|aliases|hosts|networks|ethers|netgroup|protocols|services|rpc
# only returns the first match (by design)
# dns based search is not supported (hosts,networks)
# case-insensitive matches not supported (ethers; others?)
# may return false-positives (hosts,protocols,rpc,services,ethers)
[ -z "$PATH" ] && PATH="/bin:/usr/bin" || PATH="${PATH}:/bin:/usr/bin"
export PATH
file="/etc/$1"
case $1 in
passwd|group)
match="^$2:\|^[^:]*:[^:]*:$2:" ;;
shadow)
match="^$2:" ;;
networks|netgroup)
match="^[[:space:]]*$2\>" ;;
hosts|protocols|rpc|services|ethers)
match="\<$2\>" ;;
aliases)
match="^[[:space:]]*$2[[:space:]]*:" ;;
""|-h|--help)
echo "USAGE: $0 database [key]"
exit 0 ;;
*)
echo "$0: Unknown database: $1" 1>&2
exit 1 ;;
esac
if [ ! -f "$file" ] ; then
echo "$0: Could not find database file for $1" 1>&2
exit 1
fi
if [ $# -eq 1 ] ; then
exec cat "$file"
else
sed "s/#.*//; /$match/q; d" "$file" | grep . || exit 2
fi
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