write-sim-card: better bash

uicc/write-sim-card

 #!/bin/bash
 #set -xv
-SOURCE="${BASH_SOURCE[0]:-$0}"
+SOURCE=$(readlink -f "${BASH_SOURCE[0]:-$0}")
+SOURCE_DIR="$(cd -P "$(dirname "$SOURCE")" && pwd)"
 if [ -z "$1" ]; then
   echo "Usage: ./write-sim-card ORS_NUMBER [SIM_NUMBER_START]";
   exit;
 fi
-while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
-  TARGET="$(readlink "$SOURCE")"
-         if [[ $TARGET == /* ]]; then
-    echo "SOURCE '$SOURCE' is an absolute symlink to '$TARGET'"
-    SOURCE="$TARGET"
-  else
-    DIR="$( dirname "$SOURCE" )"
-    echo "SOURCE '$SOURCE' is a relative symlink to '$TARGET' (relative to '$DIR')"
-    SOURCE="$DIR/$TARGET" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
-  fi
-done
-export OCP_DIR="$(cd -P "$(dirname "$SOURCE")" && pwd)"
 adm="12345678"
 plmn="00101"
 # Albania
@@ -36,6 +25,6 @@ while read j ; do
 [[ $j = "q" ]] && exit
 i=$(printf "%05d" $imsinum)
 echo programming imsi: $i
-sudo $OCP_DIR/program_uicc --adm ${adm} --iccid 898600611000000$i --imsi ${plmn}00000$i --isdn 06000$i --acc 0001 --key 00112233445566778899AABBCCDDEEFF --opc 000102030405060708090A0B0C0D0E0F -spn "RS-ORS$1-$i" --authenticate --noreadafter
+sudo $SOURCE_DIR/program_uicc --adm ${adm} --iccid 898600611000000$i --imsi ${plmn}00000$i --isdn 06000$i --acc 0001 --key 00112233445566778899AABBCCDDEEFF --opc 000102030405060708090A0B0C0D0E0F -spn "RS-ORS$1-$i" --authenticate --noreadafter
 let imsinum=$imsinum+1
 done