htop - an interactive process viewer
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Emmanuel Mathi-Amorim ff0ea41c86 Fix issue where last line is not cleared when SIGINT is received
When we close the application using the quit function F10, the last line
is cleared so that on terminals which do not support ALTBUF the last
line is not clobbered. This do not happen when the application exits as
a result of a signal (SIGINT,SIGTERM,SIGQUIT).

Move the logic to clear the last line into the CRT_done function. This
ensures that it will be executed when the CRT_handleSIGTERM is called.
2021-12-01 17:08:13 +01:00
.github add github workflow to build release tarball 2021-11-23 16:29:25 +00:00
darwin Tidy up process state handling 2021-11-02 20:02:54 +01:00
docs astyle: Add `--pad-header` option 2021-10-01 15:01:51 +02:00
dragonflybsd Reduce allocation size of cp_time_n and cp_time_o on FreeBSD and DragonFlyBSD 2021-11-19 12:46:48 +01:00
freebsd Reduce allocation size of cp_time_n and cp_time_o on FreeBSD and DragonFlyBSD 2021-11-19 12:46:48 +01:00
generic Add a fix to use gettimeofday if monotonic is not available. 2021-11-28 23:13:46 +01:00
iwyu IWYU: add two header rules 2021-08-25 09:54:30 +02:00
linux Include support for legacy LXC cgroup naming 2021-11-28 20:19:10 +01:00
netbsd Correct the order of xCalloc parameters in a couple of places 2021-11-05 09:22:09 +11:00
openbsd Correct the order of xCalloc parameters in a couple of places 2021-11-05 09:22:09 +11:00
pcp Fix process state handling compiler warning on PCP platform 2021-11-03 15:46:20 +11:00
scripts Suppress reporting memory leaks originating from libdevstat 2021-10-14 23:25:19 +02:00
solaris Tidy up process state handling 2021-11-02 20:02:54 +01:00
unsupported Tidy up process state handling 2021-11-02 20:02:54 +01:00
zfs Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
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.gitignore docs: updates and new manual page for pcp-htop 2021-08-03 14:11:21 +10:00
.travis.yml travis-ci: update 2021-09-02 08:03:21 +02:00
AUTHORS Update AUTHORS file with htop-dev team 2020-12-05 11:07:32 +01:00
Action.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Action.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Affinity.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Affinity.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
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AffinityPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
AvailableColumnsPanel.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
AvailableColumnsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
AvailableMetersPanel.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
AvailableMetersPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
BatteryMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
BatteryMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
CONTRIBUTING.md Adjust to current label reality and the fact that Github can't search for multiple labels ORed ... yet. 2021-05-14 11:29:29 +02:00
COPYING Remove license excemption for PLPA and update GPL-2 license text 2021-08-26 11:37:36 +02:00
CPUMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
CPUMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
CRT.c Fix issue where last line is not cleared when SIGINT is received 2021-12-01 17:08:13 +01:00
CRT.h Merge branch 'clarify-license' of https://github.com/fasterit/htop into fasterit-clarify-license 2021-09-24 11:59:32 +10:00
CategoriesPanel.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
CategoriesPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ChangeLog Release 3.1.2 2021-11-30 12:03:21 +11:00
ClockMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ClockMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ColorsPanel.c Cleanup: Fix misc styleguide issues 2021-11-04 23:13:38 +01:00
ColorsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ColumnsPanel.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ColumnsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
CommandLine.c Fix issue where last line is not cleared when SIGINT is received 2021-12-01 17:08:13 +01:00
CommandLine.h Early program termination only from main() 2021-10-31 15:07:00 +01:00
CommandScreen.c cleaned up includes with iwyu 2021-05-10 18:40:53 +02:00
CommandScreen.h Make all required includes explicit 2020-10-18 20:09:05 +02:00
Compat.c Cleanup: Fix misc styleguide issues 2021-11-04 23:13:38 +01:00
Compat.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DateMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DateMeter.h Update remaining license headers to explicitly say GPLv2+ 2021-09-24 20:28:26 +02:00
DateTimeMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DateTimeMeter.h Update remaining license headers to explicitly say GPLv2+ 2021-09-24 20:28:26 +02:00
DiskIOMeter.c Discard stale information from DiskIO and NetworkIO meters 2021-10-30 10:57:14 +02:00
DiskIOMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DisplayOptionsPanel.c Elaborate the highlighting of outdated/deleted executables and libraries 2021-10-19 00:39:24 +02:00
DisplayOptionsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DynamicColumn.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DynamicColumn.h Add completion handling for dynamic meters and columns 2021-09-03 09:47:01 +02:00
DynamicMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
DynamicMeter.h Add completion handling for dynamic meters and columns 2021-09-03 09:47:01 +02:00
EnvScreen.c cleaned up includes with iwyu 2021-05-10 18:40:53 +02:00
EnvScreen.h cleaned up includes with iwyu 2021-05-10 18:40:53 +02:00
FunctionBar.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
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Header.c Header: allocate memory for terminating entry 2021-10-15 12:16:41 +02:00
Header.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
HeaderLayout.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
HeaderOptionsPanel.c Cleanup: Fix misc styleguide issues 2021-11-04 23:13:38 +01:00
HeaderOptionsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
HostnameMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
HostnameMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
IncSet.c Resolve -Wimplicit-int-conversion warnings 2021-10-01 18:36:35 +02:00
IncSet.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
InfoScreen.c Cleanup: Fix misc styleguide issues 2021-11-04 23:13:38 +01:00
InfoScreen.h InfoScreen: drop unused member 2020-12-21 22:34:50 +01:00
ListItem.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ListItem.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
LoadAverageMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
LoadAverageMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Macros.h Check for alloc_size attribute in configure.ac 2021-07-06 17:20:32 +02:00
MainPanel.c Adds a missing HAVE_GETMOUSE check. 2021-09-29 22:21:53 +02:00
MainPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Makefile.am Compress cgroup names based on some heuristics 2021-11-28 20:19:10 +01:00
MemoryMeter.c Ensure consistent reporting of MemoryMeter used memory 2021-10-12 17:46:44 +11:00
MemoryMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
MemorySwapMeter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
MemorySwapMeter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Meter.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Meter.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
MetersPanel.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
MetersPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
NEWS Remove trailing whitespaces 2020-08-21 10:37:33 +02:00
NetworkIOMeter.c Discard stale information from DiskIO and NetworkIO meters 2021-10-30 10:57:14 +02:00
NetworkIOMeter.h cleaned up includes with iwyu 2021-05-10 18:40:53 +02:00
Object.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Object.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
OpenFilesScreen.c Get file size using stat() for OpenFilesScreen if missing from lsof 2021-11-28 20:32:02 +01:00
OpenFilesScreen.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
OptionItem.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
OptionItem.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Panel.c Resolve -Wimplicit-int-conversion warnings 2021-10-01 18:36:35 +02:00
Panel.h Resolve -Wimplicit-int-conversion warnings 2021-10-01 18:36:35 +02:00
Process.c Tidy up process state handling 2021-11-02 20:02:54 +01:00
Process.h Tidy up process state handling 2021-11-02 20:02:54 +01:00
ProcessList.c Dynamically scale the ST_UID size to support 32-bit UIDs 2021-10-27 21:20:59 +02:00
ProcessList.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ProcessLocksScreen.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
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ProvideCurses.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
README Update the README to drop now redundant glibc version requirement 2021-09-27 13:14:23 +10:00
README.md Add README.md for Github 2014-02-03 09:11:39 -02:00
RichString.c Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
RichString.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
ScreenManager.c Dynamically scale the ST_UID size to support 32-bit UIDs 2021-10-27 21:20:59 +02:00
ScreenManager.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
Settings.c Validate meter configuration before proceeding 2021-10-06 08:59:02 +02:00
Settings.h Settings: use size_t for meter count in header 2021-10-01 18:36:35 +02:00
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SignalsPanel.h Update license headers to explicitly say GPLv2+ 2021-09-22 14:28:19 +02:00
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TESTPLAN Small update to test plan 2021-02-13 14:04:15 +01:00
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README.md

htop logo

CI Coverity Scan Build Status Mailing List IRC #htop GitHub Release Packaging status License: GPL v2+

Screenshot of htop

Introduction

htop is a cross-platform interactive process viewer.

htop allows scrolling the list of processes vertically and horizontally to see their full command lines and related information like memory and CPU consumption. Also system wide information, like load average or swap usage, is shown.

The information displayed is configurable through a graphical setup and can be sorted and filtered interactively.

Tasks related to processes (e.g. killing and renicing) can be done without entering their PIDs.

Running htop requires ncurses libraries, typically named libncurses(w).

htop is written in C.

For more information and details visit htop.dev.

Build instructions

Prerequisite

List of build-time dependencies:

  • standard GNU autotools-based C toolchain
    • C99 compliant compiler
    • autoconf
    • autotools
  • ncurses

Note about ncurses:

htop requires ncurses 6.0. Be aware the appropriate package is sometimes still called libncurses5 (on Debian/Ubuntu). Also ncurses usually comes in two flavours:

  • With Unicode support.
  • Without Unicode support.

This is also something that is reflected in the package name on Debian/Ubuntu (via the additional 'w' - 'w'ide character support).

List of additional build-time dependencies (based on feature flags):

  • sensors
  • hwloc
  • libcap (v2.21 or later)
  • libnl-3

Install these and other required packages for C development from your package manager.

Debian/Ubuntu

sudo apt install libncursesw5-dev autotools-dev autoconf build-essential

Fedora/RHEL

sudo dnf install ncurses-devel automake autoconf gcc

Compile from source:

To compile from source, download from the Git repository (git clone or downloads from GitHub releases), then run:

./autogen.sh && ./configure && make

Install

To install on the local system run make install. By default make install installs into /usr/local. To change this path use ./configure --prefix=/some/path.

Build Options

htop has several build-time options to enable/disable additional features.

Generic

  • --enable-unicode: enable Unicode support
    • dependency: libncursesw
    • default: yes
  • --enable-affinity: enable sched_setaffinity(2) and sched_getaffinity(2) for affinity support; conflicts with hwloc
    • default: check
  • --enable-hwloc: enable hwloc support for CPU affinity; disables affinity support
    • dependency: libhwloc
    • default: no
  • --enable-static: build a static htop binary; hwloc and delay accounting are not supported
    • default: no
  • --enable-debug: Enable asserts and internal sanity checks; implies a performance penalty
    • default: no

Performance Co-Pilot

  • --enable-pcp: enable Performance Co-Pilot support via a new pcp-htop utility
    • dependency: libpcp
    • default: no

Linux

  • --enable-sensors: enable libsensors(3) support for reading temperature data
    • dependencies: libsensors-dev(build-time), at runtime libsensors is loaded via dlopen(3) if available
    • default: check
  • --enable-capabilities: enable Linux capabilities support
    • dependency: libcap
    • default: check
  • --with-proc: location of a Linux-compatible proc filesystem
    • default: /proc
  • --enable-openvz: enable OpenVZ support
    • default: no
  • --enable-vserver: enable VServer support
    • default: no
  • --enable-ancient-vserver: enable ancient VServer support (implies --enable-vserver)
    • default: no
  • --enable-delayacct: enable Linux delay accounting support
    • dependencies: pkg-config(build-time), libnl-3 and libnl-genl-3
    • default: check

Runtime dependencies:

htop has a set of fixed minimum runtime dependencies, which is kept as minimal as possible:

  • ncurses libraries for terminal handling (wide character support).

Runtime optional dependencies:

htop has a set of fixed optional dependencies, depending on build/configure option used:

Linux

  • libdl, if not building a static binary, is always required when support for optional dependencies (i.e. libsensors, libsystemd) is present.
  • libcap, user-space interfaces to POSIX 1003.1e capabilities, is always required when --enable-capabilities was used to configure htop.
  • libsensors, readout of temperatures and CPU speeds, is optional even when --enable-sensors was used to configure htop.
  • libsystemd is optional when --enable-static was not used to configure htop. If building statically and libsystemd is not found by configure, support for the systemd meter is disabled entirely.

htop checks for the availability of the actual runtime libraries as htop runs.

BSD

On most BSD systems kvm is a requirement to read kernel information.

More information on required and optional dependencies can be found in configure.ac.

Usage

See the manual page (man htop) or the help menu (F1 or h inside htop) for a list of supported key commands.

Support

If you have trouble running htop please consult your operating system / Linux distribution documentation for getting support and filing bugs.

Bugs, development feedback

We have a development mailing list. Feel free to subscribe for release announcements or asking questions on the development of htop.

You can also join our IRC channel #htop on Libera.Chat and talk to the developers there.

If you have found an issue within the source of htop, please check whether this has already been reported in our GitHub issue tracker. If not, please file a new issue describing the problem you have found, the potential location in the source code you are referring to and a possible fix if available.

History

htop was invented, developed and maintained by Hisham Muhammad from 2004 to 2019. His legacy repository has been archived to preserve the history.

In 2020 a team took over the development amicably and continues to maintain htop collaboratively.

License

GNU General Public License, version 2 (GPL-2.0) or, at your option, any later version.