cirros-testvm/src-cirros/buildroot-2015.05/package/getent/getent

   1 #!/bin/sh
   2 # $Header: /var/cvs/uClibc/extra/scripts/getent,v 1.2 2005/02/02 14:18:01 solar Exp $
   3 #
   4 # Closely (not perfectly) emulate the behavior of glibc's getent utility
   5 #
   6 #passwd|shadow|group|aliases|hosts|networks|ethers|netgroup|protocols|services|rpc
   7 # only returns the first match (by design)
   8 # dns based search is not supported (hosts,networks)
   9 # case-insensitive matches not supported (ethers; others?)
  10 # may return false-positives (hosts,protocols,rpc,services,ethers)
  11 #
  12 # Taken from uClibc 0.9.33.
  13
  14 export PATH="${PATH}:/bin:/usr/bin"
  15
  16 file="/etc/$1"
  17 case $1 in
  18         passwd|group)
  19                 match="^$2:\|^[^:]*:[^:]*:$2:" ;;
  20         shadow)
  21                 match="^$2:" ;;
  22         networks|netgroup)
  23                 match="^[[:space:]]*$2\>" ;;
  24         hosts|protocols|rpc|services|ethers)
  25                 match="\<$2\>" ;;
  26         aliases)
  27                 match="^[[:space:]]*$2[[:space:]]*:" ;;
  28         ""|-h|--help)
  29                 echo "USAGE: $0 database [key]"
  30                 exit 0 ;;
  31         *)
  32                 echo "$0: Unknown database: $1" 1>&2
  33                 exit 1 ;;
  34 esac
  35
  36 if [ ! -f "$file" ] ; then
  37         echo "$0: Could not find database file for $1" 1>&2
  38         exit 1
  39 fi
  40
  41 if [ $# -eq 1 ] ; then
  42         exec cat "$file"
  43 else
  44         sed "s/#.*//; /$match/q; d" "$file" | grep . || exit 2
  45 fi