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diff --git a/plugins/z/README b/plugins/z/README new file mode 100644 index 000000000..ec5abc6f5 --- /dev/null +++ b/plugins/z/README @@ -0,0 +1,135 @@ +Z(1) User Commands Z(1) + + + +NAME + z - jump around + +SYNOPSIS + z [-chlrt] [regex1 regex2 ... regexn] + +AVAILABILITY + bash, zsh + +DESCRIPTION + Tracks your most used directories, based on 'frecency'. + + After a short learning phase, z will take you to the most 'frecent' + directory that matches ALL of the regexes given on the command line. + +OPTIONS + -c restrict matches to subdirectories of the current directory. + + -h show a brief help message + + -l list only + + -r match by rank only + + -t match by recent access only + +EXAMPLES + z foo cd to most frecent dir matching foo + + z foo bar cd to most frecent dir matching foo and bar + + z -r foo cd to highest ranked dir matching foo + + z -t foo cd to most recently accessed dir matching foo + + z -l foo list all dirs matching foo (by frecency) + +NOTES + Installation: + Put something like this in your $HOME/.bashrc or $HOME/.zshrc: + + . /path/to/z.sh + + cd around for a while to build up the db. + + PROFIT!! + + Optionally: + Set $_Z_CMD to change the command name (default z). + Set $_Z_DATA to change the datafile (default $HOME/.z). + Set $_Z_NO_RESOLVE_SYMLINKS to prevent symlink resolution. + Set $_Z_NO_PROMPT_COMMAND to handle PROMPT_COMMAND/precmd your- + self. + Set $_Z_EXCLUDE_DIRS to an array of directories to exclude. + (These settings should go in .bashrc/.zshrc before the lines + added above.) + Install the provided man page z.1 somewhere like + /usr/local/man/man1. + + Aging: + The rank of directories maintained by z undergoes aging based on a sim- + ple formula. The rank of each entry is incremented every time it is + accessed. When the sum of ranks is greater than 6000, all ranks are + multiplied by 0.99. Entries with a rank lower than 1 are forgotten. + + Frecency: + Frecency is a portmantaeu of 'recent' and 'frequency'. It is a weighted + rank that depends on how often and how recently something occured. As + far as I know, Mozilla came up with the term. + + To z, a directory that has low ranking but has been accessed recently + will quickly have higher rank than a directory accessed frequently a + long time ago. + + Frecency is determined at runtime. + + Common: + When multiple directories match all queries, and they all have a common + prefix, z will cd to the shortest matching directory, without regard to + priority. This has been in effect, if undocumented, for quite some + time, but should probably be configurable or reconsidered. + + Tab Completion: + z supports tab completion. After any number of arguments, press TAB to + complete on directories that match each argument. Due to limitations of + the completion implementations, only the last argument will be com- + pleted in the shell. + + Internally, z decides you've requested a completion if the last argu- + ment passed is an absolute path to an existing directory. This may + cause unexpected behavior if the last argument to z begins with /. + +ENVIRONMENT + A function _z() is defined. + + The contents of the variable $_Z_CMD is aliased to _z 2>&1. If not set, + $_Z_CMD defaults to z. + + The environment variable $_Z_DATA can be used to control the datafile + location. If it is not defined, the location defaults to $HOME/.z. + + The environment variable $_Z_NO_RESOLVE_SYMLINKS can be set to prevent + resolving of symlinks. If it is not set, symbolic links will be + resolved when added to the datafile. + + In bash, z prepends a command to the PROMPT_COMMAND environment vari- + able to maintain its database. In zsh, z appends a function _z_precmd + to the precmd_functions array. + + The environment variable $_Z_NO_PROMPT_COMMAND can be set if you want + to handle PROMPT_COMMAND or precmd yourself. + + The environment variable $_Z_EXCLUDE_DIRS can be set to an array of + directories to exclude from tracking. $HOME is always excluded. Direc- + tories must be full paths without trailing slashes. + +FILES + Data is stored in $HOME/.z. This can be overridden by setting the + $_Z_DATA environment variable. When initialized, z will raise an error + if this path is a directory, and not function correctly. + + A man page (z.1) is provided. + +SEE ALSO + regex(7), pushd, popd, autojump, cdargs + + Please file bugs at https://github.com/rupa/z/ + + + +z January 2013 Z(1) |