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README
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[](https://travis-ci.org/hishamhm/htop)
[](http://hisham.hm/htop/index.php?page=donate)
[htop](http://hisham.hm/htop/)
====
by Hisham Muhammad <hisham@gobolinux.org> (2004 - 2016)
Introduction
------------
This is `htop`, an interactive process viewer.
It requires `ncurses`. It is developed primarily on Linux,
but we also have code for running under FreeBSD and Mac OS X
(help and testing are wanted for these platforms!)
This software has evolved considerably over the years,
and is reasonably complete, but there is always room for improvement.
NOTE FROM FORK: Clock frequency and CPU temperature measurement were added for my own use.
Given my relative inexperience with C this is intendet for personal use only. If you wish to
use it though, please go ahead.
Another note; if you wish to change something in this project: all headers files are automatically generated,
meaning that if you want to add #define's, variables, etc... you have to add them in what seems like a commented out
block in the matching source file. For checking, you can use the below command to generate the header file stand-alone.
./scripts/MakeHeader.py <SOURCE_FILE>
Comparison between `htop` and classic `top`
-------------------------------------------
* In `htop` you can scroll the list vertically and horizontally
to see all processes and full command lines.
* In `top` you are subject to a delay for each unassigned
key you press (especially annoying when multi-key escape
sequences are triggered by accident).
* `htop` starts faster (`top` seems to collect data for a while
before displaying anything).
* In `htop` you don't need to type the process number to
kill a process, in `top` you do.
* In `htop` you don't need to type the process number or
the priority value to renice a process, in `top` you do.
* In `htop` you can kill multiple processes at once.
* `top` is older, hence, more tested.
Compilation instructions
------------------------
This program is distributed as a standard autotools-based package.
See the [INSTALL](/INSTALL) file for detailed instructions.
When compiling from a [release tarball](https://hisham.hm/htop/releases/), run:
./configure && make
For compiling sources downloaded from the Git repository, run:
./autogen.sh && ./configure && make
By default `make install` will install into `/usr/local`, for changing
the path use `./configure --prefix=/some/path`.
See the manual page (`man htop`) or the on-line help ('F1' or 'h'
inside `htop`) for a list of supported key commands.
If not all keys work check your curses configuration.
## License
GNU General Public License, version 2 (GPL-2.0)