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Questions tagged [command-history]

recall commands previously typed in a shell or other utility

508
votes
20answers
168k views

Preserve bash history in multiple terminal windows

I consistently have more than one terminal open. Anywhere from two to ten, doing various bits and bobs. Now let's say I restart and open up another set of terminals. Some remember certain things, some ...
184
votes
7answers
194k views

How to remove a single line from history?

I'm working in Mac OSX, so I guess I'm using bash...? Sometimes I enter something that I don't want to be remembered in the history. How do I remove it?
104
votes
13answers
149k views

How do I repeat the last command without using the arrow keys?

I know I can use Up to iterate through previous commands. Running the last command simply involves Up + Enter. However, I was thinking of buying the Happy Hacking Keyboard as I spend a lot of time in ...
100
votes
6answers
57k views

Temporarily suspend bash_history on a given shell?

Is there a way to temporarily suspend history tracking in bash, so as to enter a sort of "incognito" mode? I'm entering stuff into my terminal that I don't want recorded, sensitive financial info.
98
votes
5answers
115k views

Understanding the exclamation mark (!) in bash

I used history | less to get the lines of previous commands and from the numbers on the left hand side I found the line I wanted repeated (eg. 22) and did !22 at the command prompt and it worked -...
90
votes
3answers
19k views

^x^y unix trick for all instances in last command?

One of my favorite Unix tricks is ^x^y, which will take the last command and replace the first instance of "x" with "y". However, I'm wondering if a similar trick works to replace all instances of "x" ...
88
votes
5answers
189k views

Where is bash's history stored?

If I run history, I can see my latest executed commands. But if I do tail -f $HISTFILE or tail -f ~/.bash_history, they do not get listed. Does the file get locked, is there a temporary location or ...
87
votes
5answers
54k views

Is there any way to execute commands from history?

For example: [root@ip-10-0-7-125 ~]# history | grep free 594 free -m 634 free -m | xargs | awk '{print "free/total memory" $17 " / " $ 8}' 635 free -m 636 free -m | xargs | awk '{print "...
85
votes
6answers
311k views

How do I clear the terminal History?

I am using Linux Mint 17.1 Rebecca for about 2 days and accidentally typed my password into the terminal which is now displayed in the history list of commands I have previously typed. I want to ...
80
votes
5answers
58k views

Command-line completion from command history

So, I've looked at history and at Ctrl+R, but they are not what I thought I knew. Is there a way that I can type in the beginning of a command, and cycle through the matches in my history with some ...
74
votes
14answers
68k views

best way to search my shell's history

Is there a better way to search my history file for a command than grep? I do have some idea what the command starts as, but I don't know how far back in the history it is. update: was formerly zsh ...
74
votes
4answers
27k views

Bash history: “ignoredups” and “erasedups” setting conflict with common history across sessions

First of all, this is not a duplicate of any existing threads on SE. I have read these two threads (1st, 2nd) on better bash history, but none of the answers work - - I am on Fedora 15 by the way. I ...
63
votes
4answers
11k views

Is there any way to keep a command from being added to your history?

Is there any way to keep a command from being added to your history? I have a command that I want to keep out of my history file, and I really don't care to have it there when I search the history ...
59
votes
3answers
3k views

With BASH after “scrolling” up to a previous command… how to then move on to the next in this history?

When I say "scrolling" up, I mean using the "up arrow" key on the keyboard, which obviously scrolls you up through the history, starting at the most recent command. So you find a command maybe 30 ...
59
votes
11answers
67k views

How do I clear the Gnome terminal history?

When we use clear command or Ctrl+L in terminal, it clears terminal but we can still scroll back to view the last used commands. Is there a way to completely clear the terminal?
57
votes
2answers
17k views

Why is my bash prompt getting bugged when I browse the history? [duplicate]

Often when I start looking at history of commands some of the characters from a command displayed aren't erased, for example: What's happening: prompt$ some_command prompt$ some_commanother_command ...
55
votes
7answers
22k views

How can I remove duplicates in my .bash_history, preserving order?

I really enjoying using control+r to recursively search my command history. I've found a few good options I like to use with it: # ignore duplicate commands, ignore commands starting with a space ...
54
votes
9answers
28k views

Search for a previous command with the prefix I just typed

We can use up and down arrow to navigate in command history. In some IDEs, such as Matlab, if we input something and then press the arrow keys, we scroll among only the history commands starting with ...
52
votes
7answers
17k views

put history command onto command line without executing it

I use !n where (n) is the line number for executing a line in the history file I want executed at the command prompt which I find via history|less. But there is a command line history event I wish ...
51
votes
1answer
62k views

Command history in Zsh

How does Zsh keep track of command history? I see two files in my home directory: .zhistory and .zsh_history. What is the difference between them? The files seem to contain all of my history. Does ...
50
votes
3answers
4k views

How do I open an incognito bash session?

Is it possible to open an incognito session in bash? For example, when we need to enter passwords in commands and don't want bash to add them to history.
50
votes
10answers
43k views

How can I search history with text already entered at the prompt in zsh?

In zsh, I know that I can search history with Ctrl+r. However, oftentimes I start to type a command directly at the prompt, but then realize I should be searching history. When I hit Ctrl+r, it brings ...
48
votes
5answers
49k views

How to execute consecutive commands from history?

Suppose I want to execute a sequence of four commands that I have executed before. If the first one is 432 in the command-history, then I could do: $ !432; !433; !434; !435 I'm curious, is there a ...
47
votes
5answers
24k views

How can I `alias sudo !!`?

I'm trying to set an alias for sudo !! in Bash. I tried alias sbb='sudo !!', but it interprets that as a literal !! and prints sudo: !!: command not found If I use double quotes, it substitutes ...
45
votes
1answer
8k views

Why is bash not storing commands that start with spaces?

If I perform a sequence of commands like: $ ls $ grep abc file.txt and then use the up arrow key to get the previous one, the terminal will show the last cmd (which is the grep here) But if I do ...
44
votes
2answers
18k views

How do I perform a reverse history search in ZSH's vi-mode?

I use vim for essentially all my editing needs, so I decided to once again try vi-mode for my shell (currently ZSH w/ oh-my-zsh on OS X), but I find myself trying (and failing) to use Ctrl-R ...
40
votes
1answer
17k views

How to Navigate within bash's Reverse Search?

Bash offers the functionality to reverse search via Ctrl + R. Then one can type in a part of a command it will show a fitting entry from the history. Assume this is my history: vim foo1 vim foo2 # I ...
37
votes
2answers
49k views

Delete last N lines from bash history

When accidentally pasting a file into the shell it puts a ton of ugly nonsense entries in the bash history. Is there a clean way to remove those entries? Obviously I could close the shell and edit the ...
36
votes
12answers
6k views

How to quickly store and access often used commands?

I have a lot of commands I routinely need to execute, often with the slightest variation. Right now I'm storing them all in .bash_history and use CTRL-R to access them, but I wonder if there's a ...
34
votes
3answers
21k views

Unlimited history in zsh

In zsh, I want to have unlimited history. I set HISTSIZE=, which works in bash. Now I import an old history mv old_history .history which is pretty big wc -l .history 43562 .history If I now close ...
34
votes
2answers
14k views

Why would anyone not set 'histappend' in bash?

After finding out what this shopt -s histappend means, it seems a very sane setting, and I'm surprised that it isn't default. Why would anyone want to wipe their history on each shell exit?
33
votes
6answers
15k views

How do I close a terminal without saving the history?

More than once I've accidentally run a number of commands and polluted my bash history. How do I close my terminal without saving my bash history? I'm using Fedora.
33
votes
2answers
14k views

How can I run a command in zsh without pushing it onto the current session's history? [duplicate]

Both bash and zsh support a shorthand of not placing a command in history if you prepend it with a space. This works great across sessions (if you've setopt histignorespace). However, the command is ...
33
votes
4answers
50k views

How to get last N commands from history?

I want to see what are the last N commands in my history. I thought history | tail -n 5 would make it, but I noticed that a multiline command counts for as many lines as it has. $ echo "hello how are ...
33
votes
1answer
2k views

How does !! work in bash?

Very useful when you forget a sudo at the beginning of your command, !! acts like an alias of the previous command. Example : $ mv /very/long/path/for/a/protected/sensible/file/caution.h . (...) ...
32
votes
3answers
5k views

Why shouldn't someone use passwords in the command line?

Why do people fear writing passwords in the command line? The history file is located in ~/.history, so it's available only to the user who executed the commands (and root).
32
votes
3answers
5k views

What does !$ mean?

I'm following through a tutorial and it mentions to run this command: sudo chmod 700 !$ I'm not familiar with !$. What does it mean?
29
votes
3answers
10k views

Excluding some of the commands from being getting stored in bash history

Is there any way to exclude commands like rm -rf, svn revert from being getting stored in bash history? Actually I, by mistake, have issued them a number of times even though I have no intent to do, ...
29
votes
2answers
2k views

What does !#:3 mean in a shell command

The install guide for ack suggests installing the ack script using this command: curl http://beyondgrep.com/ack-2.14-single-file > ~/bin/ack && chmod 0755 !#:3 I assume that the !#:3 at ...
28
votes
3answers
18k views

How to view datetime stamp for history command in Zsh shell

When I run the history command on my ubuntu server, I get output as follows: history ... 25 cd ~ 26 ls -a 27 vim /etc/gitconfig 28 vim ~/.gitconfig I want to view the datetime ...
28
votes
4answers
15k views

How can I save the last command to a file?

When I am running my analyses using the bash shell, I often want to save the commands I've used that gave me good results to a file in the same directory (my "LOGBOOK", as its called) so that I can ...
28
votes
1answer
19k views

How to enable reverse search in zsh?

I recently switched to zsh (finally) and am loving it! So far one thing that I am missing is Ctrl+R to do incremental history search. I have the history set up properly HISTSIZE=10000 SAVEHIST=10000 ...
27
votes
3answers
12k views

View a range of bash history

The history command lists out all the history for the current session. Like: 1 ls 2 cd /root 3 mkdir something 4 cd something 5 touch afile 6 ls 7 cd .. 8 rm something/afile 9 cd .. 10 ls 11 history ...
24
votes
9answers
3k views

Clipboard for copying and pasting files in command line?

In Bash, suppose I visit a directory, and then another directory. I would like to copy a file from the first directory to the second directory, but without specifying the long pathnames of them. Is it ...
23
votes
1answer
5k views

What would cause vim not to retain command history?

On other distros I have run, vim remembers your command history even between sessions; this is especially handy when doing a lot of similar operations on different files. For some reason, it has been ...
22
votes
2answers
6k views

How to exit bash history search mode?

In Ubuntu 12.04 I use CTRL-R to enter a reverse history search. If the command I want is not found (after repeated CTRL-R), how do I immediately exit back to the (empty) command prompt with no ...
22
votes
4answers
10k views

ZSH: search history on up and down keys?

Currently, I have the following in my .zshrc: bindkey '^[[A' up-line-or-search bindkey '^[[B' down-line-or-search However, this only seems to match the content of my current input before a space ...
22
votes
4answers
3k views

Finding command execution time in hindsight

I've just executed a long-running process from the bash prompt. In hindsight, I wish I'd run time on it, or noted down the time at which I kicked it off. Is there any way of getting this information ...
22
votes
1answer
5k views

Re-run multiple history commands

Imagine you've just run a dozen commands. Say... $ cd foo/ # history cmd #10000 (my history is very long) $ ... more commands ... $ cd ../ # history cmd #10012 I know I can re-run them ...
21
votes
2answers
36k views

How can you log every command typed

How can you log every command someone has entered into the shell? I'm asking on both the basis of protecting yourself if you are logged into someone else's server and something breaks, or if someone ...