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 trapret() {(
  18         local retvals="$1"; shift
  19         local cmd="$1"; shift
  20         for retval in $(echo $retvals); do
  21                 local trap_$retval=1
  22         done
  23         "$cmd" "$@" || {
  24                 local retval="$?"
  25                 eval "trapped=\${trap_$retval}"
  26                 [ -n "$trapped" ] || {
  27                         return $retval
  28                 }
  29         }
  30 )}
  31
  32 md5s() {
  33         cat "$@" | (
  34                 md5sum 2>/dev/null ||
  35                 md5
  36         ) | awk '{print $1}'
  37 }