recall commands previously typed in a shell or other utility

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2
votes
0answers
31 views

Is it possible to show the current history line number when performing reverse search in bash?

Pressing Ctrl+R and typing py results in: (reverse-i-search) `py´: python I would like it to be this way: (reverse-i-search) `py´: n python where n is the history line number. I did not find an ...
2
votes
0answers
33 views

Bash: “history number” vs “command number”

While Googling how to customize my shell prompt via the PS1 variable, I'm seeing tables of special characters that can be used. In particular: \! the history number of this command ...
0
votes
0answers
44 views

Incremental search [on hold]

How to enable incremental command-history search in terminal, for all users, in debian? I have to edit the /etc/bash.bashrc right? I am refering to this: ...
1
vote
0answers
26 views

Is there a way to share vim command history? [migrated]

By that I mean what people do in bash this way: export PROMPT_COMMAND="history -a; history -c; history -r; $PROMPT_COMMAND" That is, when I run a command echo test1 in one shell, and then press Up ...
0
votes
1answer
20 views

append file with history line number values

Is there a way to append my_computer.sh with the command on line 330 by only referencing the line number? or with the fewest keystrokes possible? 326 pip install -U pip 327 man pip 328 cat ...
1
vote
1answer
54 views

cat .bash_history | grep ./configure [closed]

Why does this not give any output: cat .bash_history | grep ./configure on an system/in an shell where ./configure has been run multiple times. And if I use the arrow key's to scroll the history in ...
2
votes
1answer
41 views

How to protect against purge of bash history?

Following the answer: When closing multiple bash instances at the same time, there is a known race condition that may cause the history to be cleared. This occurs because there is no locking ...
1
vote
1answer
43 views

Removing passwords from terminal logs in CentOS 7

Sometimes a user gives a typo when they are trying to give a password after typing a sensitive command, such as su - . The user then will assume they are being given another password request, and ...
1
vote
2answers
56 views

How do I prevent just 'exit' from being saved when I close an SSH connection?

When searching for a way to do this on Google, all I can find are ways to quit the session without saving history (like kill -9 $$), but I have the opposite problem. I want to save all of my history, ...
1
vote
1answer
22 views

After removing the history file, why do I still have older commands in the history?

In a ssh session every time that I open it I assign a value to a variable. Then I remove history with command rm -f .sh_history. Everything is ok but why if I have other session opened and I do an ...
2
votes
1answer
33 views

How to merge duplicated history of command on terminal?

Do you have an experience like this? When you try to find a previos used command on terminal by up arrow and you find $ls # 1st time push `up arrow` $ls # 2nd time push `up arrow` ...
1
vote
2answers
103 views

how to record all who that login to my linux machines and records them

I installed the package audit on my linux red-hat 6.x machine in order to view the recored of each user that log to my linux machine yum install audit kit installation from: ...
2
votes
2answers
79 views

Export Command History into a Shell Script

Often I have complicated installation procedures to follow, like having to build dependencies for buildtools, to build dependencies for the application I wish to install from source. Once I have done ...
1
vote
2answers
88 views

How do I get command name of the last executed command?

Example: I type man ls, than I want to get man only. By using !! I can get man ls but how do I get man?
-1
votes
1answer
123 views

How does this bash alias to repeat the last command as sudo work? [duplicate]

I recently came across this ingenious bash alias to repeat the last issued command, but as sudo. This could be done by using sudo !! directly in the terminal after the failed command. The alias I ...
1
vote
2answers
48 views

Why does my .bash_history contain duplicate segments? [duplicate]

Since I keep my bash history under source control, I've noticed that sometimes sizable segments of the history end up repeated, sometimes hours or days after their original execution. I use Debian 7.7 ...
1
vote
1answer
80 views

View a command in the shell history [closed]

If we put a space before any command in the shell it will not shown in history. Is there any way to see that command if the user enters a space before any command?
2
votes
1answer
45 views

HISTTIMEFORMAT syntax

There are many bash guides that include adding lines such as HISTTIMEFORMAT='%d/%m/%y %T ' or HISTTIMEFORMAT="%F %T " to ~/.bashrc or /etc/bash.bashrc. There's always a space before the final quote. ...
0
votes
0answers
38 views

Bash ignore “update” command

I have this in my .bashrc export HISTTIMEFORMAT="%Y/%m/%d - %H:%M:%S - " export HISTIGNORE="&:[ ]*:reload:update" export HISTCONTROL=ignoreboth:erasedups shopt -s autocd shopt -s cmdhist shopt ...
1
vote
2answers
77 views

bash history for current session

Maybe I'm overlooking something but is there a way to get your current bash history for the current session you are using like if i run ssh host $ pwd $ ls $ cd /tmp I just want to see those 3 ...
0
votes
1answer
64 views

What does “dd” stand for? [duplicate]

What does dd stand for? I've always referred to it colloquially as "Disk Destroyer", but what are the "official" words that make up the acronym/command? According to this link and this link it could ...
0
votes
1answer
49 views

.bash_history keeps truncating

My .bash_history keeps truncating even though I set: export HISTSIZE= export HISTFILESIZE= On my .bash_profile. Im not sure when it happens but it might happen when I logout or shut down my ...
4
votes
4answers
361 views

How to capture command line input into logfile and execute it at the same time?

Let's say I issue some commands on the command line: #capture what follows $ echo "foo" foo # don't capture $ echo "bing" bing # capture again $ echo "bar" bar How can I log commands selectively ...
0
votes
1answer
73 views

How to list down all useless or less used files or application in my linux server?

I want to clean cruft from my Oracle Linux server. For this, I need to know which application or directory isn't used or is hardly ever accessed. Is there any command or way to list directories or ...
2
votes
1answer
148 views

Never clear .bash_history (HISTFILE)

Is there any command that I could use that makes .bash_history never clear itself? After a certain amount of commands it just clear itself. I think this works but I'm not sure? ...
1
vote
1answer
272 views

How to check the time at which the command was executed?

When history command is executed, it shows a list of recently executed commands. Is there any provision with which we can see the time at which those particular commands were executed?
1
vote
1answer
28 views

Partially duplicated history when setting PS1 in .bash_profile [duplicate]

When I set PS1 variable in ~/.bash_profile, it worked as configured. However, the history is somehow messed up. When I press Arrow Up or Ctrl+P to view commands I typed, it starts to duplicate ...
5
votes
3answers
338 views

How do I auto complete a command from the command history? [duplicate]

Is there a key combination for bash to auto compete a command from the history? In ipython and matlab for example this is achieved by pressing up arrow after typing a few characters.
35
votes
2answers
2k 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.
7
votes
1answer
169 views

history - List only successfully run commands

I'm wondering if there's a way to use the history command but only list commands that were run successfully. Likewise, would there be a way to list ones that produced errors? I know each command has ...
1
vote
0answers
104 views

HISTSIZE HISTFILESIZE not working [closed]

I have set these global variables in my .bashrc file Running echo $HISTSIZE echo $HISTFILESIZE both return 10000 My History contents are overding, currently from 254 - 432 If I type another two ...
5
votes
1answer
112 views

How to stop bash editing the history when I reuse and modify an entry?

Some instances of bash change the command history when you re-use and edit a previous command, others apparently don't. I've been searching and searching but can't find anything that says how to ...
0
votes
0answers
37 views

What does !$ mean exactly? [duplicate]

echo !$ outputs different strings depending on my previous command line call. For example: mrdumbdumb-redhat:~ mrdumbdumb$ ls mrdumbdumb-redhat:~ mrdumbdumb$ echo !$ echo ls ls ...
2
votes
1answer
209 views

Can you change timestamp format for history command on tcsh

When I run history command (on tcsh), it only prints the TIME portion of the timestamp and omits the date: 3 15:07 echo $PATH 4 15:07 ls -la In bash, you can use HISTTIMEFORMAT ...
5
votes
2answers
246 views

echo of a string with an exclamation point

Here are what I put in bash and the results I got about 'echo': $ echo '!$' !$ $ echo "!$" echo "'!$'" '!$' I'd like to know how 'echo' deals with the second input. It seems to me that ...
2
votes
2answers
78 views

Livesearch with first 10 matches as preview for zsh-history?

I have seen a history-livesearch with a preview, that shows the 10 first matches in the history in a list below the BUFFER-line, which is updated on every keystroke, and acts like the standard ctrl+r ...
7
votes
2answers
287 views

Is there a shortcut for repeat the second proximate command in bash?

We all know that !! can repeat the last command you do in bash. But sometimes we need to do some operation like $ python test.py $ vim test.py $ python test.py # here is where I need to repeat the ...
4
votes
4answers
140 views

Bash history in script: `!#:*`

I have been reading through the study guides for the LPIC-1. echo "This is a sentence. " !#:* !#:1->text3 I'm having trouble understanding how the above line of code repeats the echo command ...
3
votes
2answers
265 views

Show older or newer history items with the history command in zsh

I typed in the history command and it showed me the last 10 commands executed by me. Now I wanted to see the last 20 commands executed by me so (after reading the documentation): An argument of n ...
2
votes
1answer
194 views

How does execution of !find command work?

The !find command lets the user perform the previously executed find, with all its parameters. How does it work internally, where exactly has this behaviour been programmed?
20
votes
8answers
8k 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 ...
3
votes
1answer
87 views

Persistent directory stacks across sessions in zsh

I would like to share my directory stack (the one accessed with dirs) across sessions and tmux panes/windows. In the zshbuiltins man page I have found autopushd to add every directory I switch into ...
1
vote
3answers
57 views

Command to 're-apply' previous command?

Is there an easy way to re-apply a previous command to a new command line entry? Say I typed in chmod u+r,g+x file.txt but forgot the sudo. Could I simply type sudo <some easy symbol>'? ...
2
votes
1answer
32 views

Is using shorthand quick substitution of history expansion problematic?

In my terminal (bash 3), I sometimes use the quick substitution ^aa^bb^ ^string1^string2^ Quick substitution. Repeat the last command, replacing string1 with string2. Equivalent to ...
2
votes
1answer
88 views

Ctrl-R style interactive search in custom file

I want to be able to search a custom text file similar to the interactive history search in bash. Once the wanted entry is found, executes the line. Bonus Points: have each record contain two ...
18
votes
3answers
7k 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 ...
1
vote
1answer
93 views

Searching history forward after backward?

In bash, when I hit Ctrlr, I can search the command history backward. If I would like to search forward again, what shall I do? I hit Ctrls, but it doesn't work. My bash is GNU bash, version ...
1
vote
2answers
97 views

alias for a command using !! to recall the last command [duplicate]

This is a follow-up question to Execute a line of commands with one sudo If you want to redo the same command with sudo !! after doing a command like this: echo "something">/path/file You ...
11
votes
3answers
5k views

Execute a line of commands with one sudo

For example if I want to create a file and enter text in one line I can redirect the output into a file with the use of the > operator: echo "something" > /path/foobar but if I don't have ...
2
votes
1answer
260 views

History in the Almquist shell in the NetBSD

In NetBSD /bin/sh is a modified version of the Almquist shell. With the command fc -l it is possible to view the last 16 commands typed in the prompt in the current session and not the older ones. ...