Makes an alias for cd'ing to the current directory.

cdalias

#!/bin/sh                                                                                                                                                                                       
                                                                                                                                                                                                
###                                                                                                                                                                                             
# cdalias                                                                                                                                                                                       
###                                                                                                                                                                                             
# Makes an alias for cd'ing to the current directory.                                                                                                                                           
# First parameter is alias name.
# If first parameter is -d followed by <alias-name> the matching alias will
# me deleted.
# Put this code in your ~/.bashrc or source this file accordingly.
######################################################                                                                                                                                          
 
# ALIAS_DIR: for now, dont forget the ending /                                                                                                                                                                                               
ALIAS_DIR="~/"
# ALIAS FILE: leading dots not possible yet                                                                                                                                                                
ALIAS_FILE=".bashrc_aliases"

# source alias-file if exists
if [ -f $ALIAS_DIR$ALIAS_FILE ]; then
    source $ALIAS_DIR$ALIAS_FILE                                                                                                                                                                    
fi
function cdalias(){                                                                                                                                                                             
    alias_path=$ALIAS_DIR$ALIAS_FILE                                                                                                                                                            
    dest=$(pwd)                                                                                                                                                                                 
                                                                                                                                                                                                
    alias_name=$1                                                                                                                                                                               
    if [ $1 = -d ]; then                                                                                                                                                                        
        # -d deletes alias                                                                                                                                                                      
        alias_name=$2                                                                                                                                                                           
    fi                                                                                                                                                                                          
                                                                                                                                                                                                
    if [ -d $ALIAS_DIR ]; then                                                                                                                                                                  
        if [ ! -f $alias_path ]; then                                                                                                                                                           
            touch $alias_path                                                                                                                                                                   
            echo "#!/bin/sh" > $alias_path                                                                                                                                                      
        fi                                                                                                                                                                                      
                                                                                                                                                                                                
        if [ $1 = -d ]; then                                                                                                                                                                    
            # just to be save                                                                                                                                                                   
            cp $alias_path $ALIAS_DIR$ALIAS_FILE.bak                                                                                                                                            
            rm $alias_path                                                                                                                                                                      
            awk '!/alias '$alias_name'=/{ print };' $alias_path.bak > $alias_path                                                                                                                                                                                                                                                                            
        else                                                                                                                                                                                    
            echo "alias ${alias_name}=\"cd $dest\"" >> $alias_path                                                                                                                              
        fi                                                                                                                                                                                      
        source $ALIAS_DIR$ALIAS_FILE                                                                                                                                                            
    else                                                                                                                                                                                        
        echo "alias directory $ALIAS_DIR does not exist."                                                                                                                                       
        echo "Make sure to change your ALIAS_DIR or create the directory."                                                                                                                      
    fi                                                                                                                                                                                          
}