hash (Unix)
hash is a Unix command that prints the location information for the commands found.
| Operating system | Unix and Unix-like |
|---|---|
| Type | Command |
Syntax
$ hash [name]
Description
When the user gives a command, the shell searches for the command in the path specified in the PATH environmental variable and stores the location in the hash. This command can be used to search for the command given. The command is built into the shell. C shell implements this command in a different way.
Options
The following options are supported.
- name
- Searches the PATH environmental variable for the name given
Exit Status
This command returns the following exit values:
- 0
- Successful completion
- 1
- An Error occurred
Examples
$ hash
Print the hash table.
$ hash cat
Searches for command cat in the path specified by PATH environmental variable; if found, adds it to the hash.
gollark: WHAT THEN?
gollark: What happens if I want to open a file and do different things if it doesn't exist versus if a bee entered my computer's filesystem?
gollark: You can't. It's permanently dissolved into your tongue now. Sorry about that.
gollark: I value developer ergonomics over 1KB of space.
gollark: That doesn't seem particularly problematic.
External links
 |
The Wikibook Guide to Unix has a page on the topic of: Commands |
- – Commands & Utilities Reference, The Single UNIX Specification, Issue 7 from The Open Group
- – Solaris 10 User Commands Reference Manual
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| Text processing | |
| Shell builtins | |
| Searching | |
| Documentation | |
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