1getvar() { 2 eval "echo \"\${$1}\"" 3} 4 5var2file() { 6 local var 7 eval "var=\"\${$1}\"" 8 if [ -n "$var" ]; then echo "$var" > "$2"; fi 9} 10 11isset() { 12 local var 13 eval "var=\"\${$1}\"" 14 [ -n "$var" ] 15} 16 17trapret() {( 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 $retval 28 } 29 } 30)} 31 32md5s() { 33 cat "$@" | ( 34 md5sum 2>/dev/null || 35 md5 36 ) | awk '{print $1}' 37} 38