# scd - smart change of directory Define `scd` shell function for changing to any directory with a few keystrokes. `scd` keeps history of the visited directories, which serves as an index of the known paths. The directory index is updated after every `cd` command in the shell and can be also filled manually by running `scd -a`. To switch to some directory, `scd` needs few fragments of the desired path to match with the index. A selection menu is displayed in case of several matches, with a preference given to recently visited paths. `scd` can create permanent directory aliases, which appear as named directories in zsh session. ## INSTALLATION For oh-my-zsh, add `scd` to the `plugins` array in the ~/.zshrc file as in the [template file](../../templates/zshrc.zsh-template#L45). Besides zsh, `scd` can be used with *bash*, *dash* or *tcsh* shells and is also available as [Vim](http://www.vim.org/) plugin and [IPython](http://ipython.org/) extension. For installation details, see https://github.com/pavoljuhas/smart-change-directory. ## SYNOPSIS ```sh scd [options] [pattern1 pattern2 ...] ``` ## OPTIONS
-a, --add
add specified directories to the directory index.
--unindex
remove specified directories from the index.
-r, --recursive
apply options --add or --unindex recursively.
--alias=ALIAS
create alias for the current or specified directory and save it to ~/.scdalias.zsh.
--unalias
remove ALIAS definition for the current or specified directory from ~/.scdalias.zsh.
--list
show matching directories and exit.
-v, --verbose
display directory rank in the selection menu.
-h, --help
display this options summary and exit.
## Examples ```sh # Index recursively some paths for the very first run scd -ar ~/Documents/ # Change to a directory path matching "doc" scd doc # Change to a path matching all of "a", "b" and "c" scd a b c # Change to a directory path that ends with "ts" scd "ts(#e)" # Show selection menu and ranking of 20 most likely directories scd -v # Alias current directory as "xray" scd --alias=xray # Jump to a previously defined aliased directory scd xray ``` # FILES
~/.scdhistory
time-stamped index of visited directories.
~/.scdalias.zsh
scd-generated definitions of directory aliases.
# ENVIRONMENT
SCD_HISTFILE
path to the scd index file (by default ~/.scdhistory).
SCD_HISTSIZE
maximum number of entries in the index (5000). Index is trimmed when it exceeds SCD_HISTSIZE by more than 20%.
SCD_MENUSIZE
maximum number of items for directory selection menu (20).
SCD_MEANLIFE
mean lifetime in seconds for exponential decay of directory likelihood (86400).
SCD_THRESHOLD
threshold for cumulative directory likelihood. Directories with a lower likelihood compared to the best match are excluded (0.005).
SCD_SCRIPT
command script file where scd writes the final cd command. This variable must be defined when scd runs in its own process rather than as a shell function. It is up to the scd caller to use the output in SCD_SCRIPT.