HASH(1SH)               COMMAND REFERENCE               HASH(1SH)



NAME
     hash - execution path hashing (sh built-in)

SYNOPSIS
     hash [ -r ] [ name . . .  ]

DESCRIPTION
     For each name, the location in the execution search path of
     the command specified by name is determined and remembered
     by the shell.  This speeds up execution of commands greatly.

     The -r option causes the shell to forget about all known
     locations.

     If no arguments are given, information about each command
     that is remembered is printed.  The column labelled hits is
     the number of times that each listed command has been
     invoked by the current shell.  The column labelled cost is a
     measure of the work required to locate the command in the
     search path.

     In certain situations, the stored location of a command must
     be recalculated.  Commands for which this will be done are
     indicated by an asterisk adjacent to the hits information.
     The cost information is incremented when the recalculation
     is done.

OPTIONS
     -r Removes all remembered commands from the hash list.

EXAMPLES
     Executing the command:

          hash ls

     will cause the path of the command ls to be stored for
     faster execution.

RETURN VALUE
     [NO_ERRS]      Command completed without error.

     [NO_CMD]       Shell could not find the command.

SEE ALSO
     break(1sh), cd(1sh), chdir(1sh), continue(1sh), csh(1csh),
     echo(1sh), eval(1sh), exec(1sh), exit(1sh), export(1sh),
     hashstat(1csh), login(1), pwd(1sh), read(1sh),
     readonly(1sh), rehash(1csh), return(1sh), set(1sh), sh(1sh),
     shift(1sh), test(1sh), times(1sh), trap(1sh), type(1sh),
     ulimit(1sh), umask(1sh), unhash(1csh), unset(1sh),
     wait(1sh), which(1sh), and execve(2).




Printed 5/12/88                                                 1

%%index%%
na:288,99;
sy:387,191;
de:578,1073;
op:1651,159;
ex:1810,225;
rv:2035,232;
se:2267,969;
%%index%%000000000121