How to collapse all trees in htop?

Question

I would like to be able to collapse all the trees in the default view of htop. Is there a way to achieve that at once, instead of selecting every tree and hitting F6?

ojdo · Accepted Answer · 2023-05-08T08:54:13.743

Possible as of 3.1.0 (not yet in all distributions)

As of htop --version 3.1.0, you can in fact toggle-collapse all branches of the tree view (F5) using hotkey * (asterisk). The release happened only on 2021-09-21, so most 2022 linux distributions (except those with rolling releases) are about to receive the updated version with their next release.

For example, the Ubuntu package overview for htop shows that

❌ Ubuntu 21.10 (impish) and 22.04 LTS (jammy) both stick to version 3.0.5 and only
✅ Ubuntu 22.10 (kinetic) ships with 3.2.1.

And just for completeness sake:

Collapsing and expanding invidivual tree nodes was/remains possible using - and +
To review all key bindings in your version of htop, simply enter the help screen (? or h or F1)

Works with 3.2.1, just tested it. Just to add that you first need to press F5 to create the tree hierarchy and then press asterisk to collapse all trees. — geo909, Oct 27 '22 at 08:45

score 6 · Answer 2 · answered Mar 21 '18 at 12:58

6

AFAIK "t" is the hotkey for expansion and collapsing tree view in htop.

answered Mar 21 '18 at 12:58

x3l51

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Worked for me. Dunno why it got a downvote :/ ? – The Unfun Cat May 01 '18 at 16:51
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For me it switches between tree and list so it doesn't really collapse. – Henrik Sommerland Jun 01 '18 at 12:39
But that *is* callapsing Would you rather kill a process (tree)? – x3l51 Aug 02 '18 at 07:49
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toggle between tree/list isn't what's being asked for here. – Bruce Edge Aug 03 '19 at 22:59
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`t` is a switch to disable/enable tree view, not to collapse tree – QkiZ Apr 20 '20 at 09:15

score 6 · Answer 3 · answered Jun 07 '21 at 07:11

6

You can use the * key

This was implemented in version 3.0.5 (2021-01-12)

answered Jun 07 '21 at 07:11

congusbongus

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Looks like it hasn't been released just yet, but apparently the + key works to collapse individual line entries. – Nickolai Jun 15 '21 at 18:41
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`=` seems to be doing the same job – kuzdogan Jan 20 '22 at 15:18

score 2 · Answer 4 · answered Jan 12 '22 at 13:13

2

It is still not implented. Moreover, F5/F6 were "killed".

Besides, +/- do not work from keypad. As a result, the whole idea of tree-view became useless (as for me it is the only possible way to represent a lot of processes)

answered Jan 12 '22 at 13:13

Dorco

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This does not provide an answer to the question. Once you have sufficient [reputation](https://superuser.com/help/whats-reputation) you will be able to [comment on any post](https://superuser.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/1102158) – DarkDiamond Jan 12 '22 at 14:26

score -7 · Answer 5 · edited Feb 09 '21 at 11:49

I don't know about any option to expand/collapse individual branches in htop's tree view (or any other ncurses-based software¹). I would suggest not to presume things of text-based applications from things you have learned from graphical ones².

You can (only) enable/disable tree based view using F5.

Notes:

I've got somehow used to the different design pattern in text-based (DOS era and ncurses or similar based Unix ones) and graphical applications. This collapse tree thing was, in my eyes, a thing invented in Windows.
I would suggest anyone who want to get used to Unix systems disable their GUI for at least a week and learn things again from the bottom up.

Is `aptitude` curse-based? That certainly opens/closes subtrees. — Toby Speight, Feb 09 '21 at 11:50

How to collapse all trees in htop?

5 Answers5

Possible as of 3.1.0 (not yet in all distributions)

Linked