include/shell.sh

   1 getvar() {
   2         eval "echo \"\${$1}\""
   3 }
   4
   5 var2file() {
   6         local var
   7         eval "var=\"\${$1}\""
   8         if [ -n "$var" ]; then echo "$var" > "$2"; fi
   9 }
  10
  11 isset() {
  12         local var
  13         eval "var=\"\${$1}\""
  14         [ -n "$var" ]
  15 }
  16
  17 md5s() {
  18         cat "$@" | (
  19                 md5sum 2>/dev/null ||
  20                 md5
  21         ) | awk '{print $1}'
  22 }