Bash script (bashmap): A quasi-bash function without hashmap

@ 2013/7/19

-Added the bashmap_clear command to delete the key or clear the entire map.

Step 1: add the function to the bash script (or. bashrc)

# for bashmap {# echo md5 code for $1md5(){  if [ X"$1" == X"" ]  then    echo ""  else    echo "$1" | md5sum - | cut -c 1-32  fi}# Usage#   > bashmap "key" "value"  # set map[key] = value.#   > bashmap "key"          # print map[key]bashmap(){  WX_BASHMAP_PREFIX="BASHMAP_"  export WX_BASHMAP_PREFIX  md5key=$(eval "md5 '$1'")  case "$#" in  1)    eval "echo \$$WX_BASHMAP_PREFIX$md5key"    ;;  2)    eval "export $WX_BASHMAP_PREFIX$md5key='$2'"    ;;  *)    echo 'Usage:'    echo '   bashmap "key" "value"'    echo '   bashmap "key"'    ;;  esac}# Usage:#    > bashmap_clear      # clear All map items#    > bashmap_clear Key  # clear a map time by Keybashmap_clear(){  WX_BASHMAP_PREFIX="BASHMAP_"  export WX_BASHMAP_PREFIX  case "$#" in  0)    for env in $(set | grep "^$WX_BASHMAP_PREFIX" | cut -d'=' -f1)    do      unset $env    done    ;;  1)    md5key=$(eval "md5 '$1'")    unset $WX_BASHMAP_PREFIX$md5key    ;;  esac}# for bashmap }

Step 2: Use bashmap to set key: Value

> bashmap A "Value for A"> bashmap B "Value for B"> bashmap "A B" "Value for A B"

Step 3: Use bashmap to obtain the value corresponding to the key. If no preset key exists, an empty string "" is returned ""

> bashmap AValue for A> bashmap BValue for B> bashmap "A B"Value for A B

Step 4: delete a specified key

> bashmap_clear "B"

Step 5: Clear the map

> bashmap_clear

Have fun!