${PRINTF} "Unknown dir: %s\n" "${cd_npwd}"            local -i ftflag=0            for i in "${cd_npwd}"*            do                if ${TEST} -d "${i}"                then                    if ${TEST} ${ftflag} -eq 0                    then                        ${PRINTF} "Suggest:\n"                        ftflag=1                fi                    ${PRINTF} "\t-a${choose} %s\n" "$i"                                        cd_sugg[$choose]="${i}"                    choose=${choose}+1        fi            done        fi        fi        if ${TEST} ${cd_specDir} -ne -1        then                CDS[${cd_specDir}]=`pwd`        fi        if ${TEST} ! -z "${CDL_PROMPTLEN}"        then        cd_right_trunc "${PWD}" ${CDL_PROMPTLEN}            cd_rp=${CDL_PROMPT_PRE}${tcd}${CDL_PROMPT_POST}                export PS1="$(echo -ne ${cd_rp})"        fi}##################################################################################                                                                               ##                            Initialisation here                                ##                                                                               ###################################################################################VERSION_MAJOR="1"VERSION_MINOR="2.1"VERSION_DATE="24-MAY-2003"#alias cd=cd_new## Set up commandsRM=/bin/rmTEST=testPRINTF=printf              # Use builtin printf##################################################################################                                                                               ## Change this to modify the default pre- and post prompt strings.               ## These only come into effect if CDL_PROMPTLEN is set.                          ##                                                                               ##################################################################################if ${TEST} ${EUID} -eq 0then#   CDL_PROMPT_PRE=${CDL_PROMPT_PRE:="$HOSTNAME@"}    CDL_PROMPT_PRE=${CDL_PROMPT_PRE:="\\[\\e[01;31m\\]"}    # Root is in red    CDL_PROMPT_POST=${CDL_PROMPT_POST:="\\[\\e[00m\\]#"}else    CDL_PROMPT_PRE=${CDL_PROMPT_PRE:="\\[\\e[01;34m\\]"}    # Users in blue    CDL_PROMPT_POST=${CDL_PROMPT_POST:="\\[\\e[00m\\]$"}fi################################################################################### cd_maxhistory defines the max number of history entries allowed.typeset -i cd_maxhistory=50################################################################################### cd_maxspecial defines the number of special entries.typeset -i cd_maxspecial=9##################################################################################### cd_histcount defines the number of entries displayed in the history command.typeset -i cd_histcount=9##################################################################################export CDPath=${HOME}/#  Change these to use a different                                              ##+ default path and filename                                                    #export CDFile=${CDFILE:=cdfile}                   # for the -u and -f commands  ###################################################################################                                                                                #typeset -i cd_lchar cd_rchar cd_flchar                               #  This is the number of chars to allow for the  #cd_flchar=${FLCHAR:=75}        #+ cd_flchar is used for for the @s & @h history #typeset -ax CD CDS#cd_mset="\n\tDefault mode is now set - entering cd with no parameters has the default action\n\tUse cd -d or -D for cd to go to previous directory with no parameters\n"cd_mnset="\n\tNon-default mode is now set - entering cd with no parameters is the same as entering cd 0\n\tUse cd -d or -D to change default cd action\n"# ==================================================================== #: <<DOCUMENTATIONWritten by Phil Braham. Realtime Software Pty Ltd.Released under GNU license. Free to use. Please pass any modificationsor comments to the author Phil Braham:realtime@mpx.com.au===============================================================================cdll is a replacement for cd and incorporates similar functionality tothe bash pushd and popd commands but is independent of them.This version of cdll has been tested on Linux using Bash. It will workon most Linux versions but will probably not work on other shells withoutmodification.Introduction============cdll allows easy moving about between directories. When changing to a newdirectory the current one is automatically put onto a stack. By default50 entries are kept, but this is configurable. Special directories can bekept for easy access - by default up to 10, but this is configurable. Themost recent stack entries and the special entries can be easily viewed.The directory stack and special entries can be saved to, and loaded from,a file. This allows them to be set up on login, saved before logging outor changed when moving project to project.In addition, cdll provides a flexible command prompt facility that allows,for example, a directory name in colour that is truncated from the leftif it gets too long.Setting up cdll===============Copy cdll to either your local home directory or a central directorysuch as /usr/bin (this will require root access).Copy the file cdfile to your home directory. It will require read andwrite access. This a default file that contains a directory stack andspecial entries.To replace the cd command you must add commands to your login script.The login script is one or more of:    /etc/profile    ~/.bash_profile    ~/.bash_login    ~/.profile    ~/.bashrc    /etc/bash.bashrc.local    To setup your login, ~/.bashrc is recommended, for global (and root) setupadd the commands to /etc/bash.bashrc.local    To set up on login, add the command:    . <dir>/cdllFor example if cdll is in your local home directory:    . ~/cdllIf in /usr/bin then:    . /usr/bin/cdllIf you want to use this instead of the buitin cd command then add:    alias cd='cd_new'We would also recommend the following commands:    alias @='cd_new @'    cd -U    cd -DIf you want to use cdll's prompt facilty then add the following:    CDL_PROMPTLEN=nnWhere nn is a number described below. Initially 99 would be suitablenumber.Thus the script looks something like this:    ######################################################################    # CD Setup    ######################################################################    CDL_PROMPTLEN=21        # Allow a prompt length of up to 21 characters    . /usr/bin/cdll         # Initialise cdll    alias cd='cd_new'       # Replace the built in cd command    alias @='cd_new @'      # Allow @ at the prompt to display history    cd -U                   # Upload directories    cd -D                   # Set default action to non-posix    ######################################################################The full meaning of these commands will become clear later.There are a couple of caveats. If another program changes the directorywithout calling cdll, then the directory won't be put on the stack andalso if the prompt facility is used then this will not be updated. Twoprograms that can do this are pushd and popd. To update the prompt andstack simply enter:    cd .    Note that if the previous entry on the stack is the current directorythen the stack is not updated.Usage=====  cd [dir] [0-9] [@[s|h] [-g <dir>] [-d] [-D] [-r<n>] [dir|0-9] [-R<n>]   [<dir>|0-9] [-s<n>] [-S<n>] [-u] [-U] [-f] [-F] [-h] [-H] [-v]    <dir>       Go to directory    0-n         Goto previous directory (0 is previous, 1 is last but 1, etc.)                n is up to max history (default is 50)    @           List history and special entries (Usually available as $ @)    @h          List history entries    @s          List special entries    -g [<dir>]  Go to literal name (bypass special names)                This is to allow access to dirs called '0','1','-h' etc    -d          Change default action - verbose. (See note)    -D          Change default action - silent. (See note)    -s<n>       Go to the special entry <n>    -S<n>       Go to the special entry <n> and replace it with the current dir    -r<n> [<dir>] Go to directory <dir> and then put it on special entry <n>    -R<n> [<dir>] Go to directory <dir> and put current dir on special entry <n>    -a<n>       Alternative suggested directory. See note below.    -f [<file>] File entries to <file>.    -u [<file>] Update entries from <file>.                If no filename supplied then default file (~/cdfile) is used                -F and -U are silent versions    -v          Print version number    -h          Help    -H          Detailed helpExamples========These examples assume non-default mode is set (that is, cd with noparameters will go to the most recent stack directory), that aliaseshave been set up for cd and @ as described above and that cd's promptfacility is active and the prompt length is 21 characters.    /home/phil$ @                                                   # List the entries with the @    History:                                                        # Output of the @ command    .....                                                           # Skipped these entries for brevity    1 /home/phil/ummdev               S1 /home/phil/perl            # Most recent two history entries    0 /home/phil/perl/eg              S0 /home/phil/umm/ummdev      # and two special entries are shown        /home/phil$ cd /home/phil/utils/Cdll                            # Now change directories    /home/phil/utils/Cdll$ @                                        # Prompt reflects the directory.    History:                                                        # New history    .....       1 /home/phil/perl/eg              S1 /home/phil/perl            # History entry 0 has moved to 1    0 /home/phil                      S0 /home/phil/umm/ummdev      # and the most recent has entered       To go to a history entry:    /home/phil/utils/Cdll$ cd 1                                     # Go to history entry 1.    /home/phil/perl/eg$                                             # Current directory is now what was 1    To go to a special entry:    /home/phil/perl/eg$ cd -s1                                      # Go to special entry 1    /home/phil/umm/ummdev$                                          # Current directory is S1To go to a directory called, for example, 1:    /home/phil$ cd -g 1                                             # -g ignores the special meaning of 1    /home/phil/1$    To put current directory on the special list as S1:    cd -r1 .        #  OR    cd -R1 .        #  These have the same effect if the directory is                    #+ . (the current directory)To go to a directory and add it as a special      The directory for -r<n> or -R<n> may be a number. For example:        $ cd -r3 4  Go to history entry 4 and put it on special entry 3        $ cd -R3 4  Put current dir on the special entry 3 and go to                    history entry 4        $ cd -s3    Go to special entry 3    Note that commands R,r,S and s may be used without a number and    refer to 0:        $ cd -s     Go to special entry 0        $ cd -S     Go to special entry 0 and make special entry 0                    current dir        $ cd -r 1   Go to history entry 1 and put it on special entry 0        $ cd -r     Go to history entry 0 and put it on special entry 0    Alternative suggested directories:    If a directory is not found, then CD will suggest any    possibilities. These are directories starting with the same letters    and if any are found they are listed prefixed with -a<n>    where <n> is a number. It's possible to go to the directory    by entering cd -a<n> on the command line.        Use cd -d or -D to change default cd action. cd -H will show        current action.        The history entries (0-n) are stored in the environment variables        CD[0] - CD[n]        Similarly the special directories S0 - 9 are in the environment        variable CDS[0] - CDS[9]        and may be accessed from the command line, for example:                    ls -l ${CDS[3]}            cat ${CD[8]}/file.txt        The default pathname for the -f and -u commands is ~        The default filename for the -f and -u commands is cdfileConfiguration=============    The following environment variables can be set:            CDL_PROMPTLEN  - Set to the length of prompt you require.            Prompt string is set to the right characters of the current            directory. If not set, then prompt is left unchanged. Note            that this is the number of characters that the directory is            shortened to, not the total characters in the prompt.            CDL_PROMPT_PRE - Set to the string to prefix the prompt.                Default is:                    non-root:  "\\[\\e[01;34m\\]"  (sets colour to blue).                    root:      "\\[\\e[01;31m\\]"  (sets colour to red).            CDL_PROMPT_POST    - Set to the string to suffix the prompt.                Default is:                    non-root:  "\\[\\e[00m\\]$"    (resets colour and displays $).                    root:      "\\[\\e[00m\\]#"    (resets colour and displays #).        Note:            CDL_PROMPT_PRE & _POST only t        CDPath - Set the default path for the -f & -u options.                 Default is home directory        CDFile - Set the default filename for the -f & -u options.                 Default is cdfile    There are three variables defined in the file cdll which control the    number of entries stored or displayed. They are in the section labeled    'Initialisation here' towards the end of the file.        cd_maxhistory       - The number of history entries stored.                              Default is 50.        cd_maxspecial       - The number of special entries allowed.                              Default is 9.        cd_histcount        - The number of history and special entries                              displayed. Default is 9.    Note that cd_maxspecial should be >= cd_histcount to avoid displaying    special entries that can't be set.Version: 1.2.1 Date: 24-MAY-2003DOCUMENTATION