recall commands previously typed in a shell or other utility

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1
vote
3answers
394 views

Different “history” command output after reconnecting via SSH

Why do I get different results for the "history" command for the same user after I reconnect a disconnected SSH session? I connect to a server using putty (SSH), say as root My network gets ...
3
votes
0answers
43 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 ...
2
votes
1answer
28 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 ...
0
votes
0answers
21 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 ...
6
votes
2answers
175 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 ...
3
votes
2answers
834 views

Keep all commands in bash history?

I have the opposite question to this. How do I keep all commands in bash history? In Ubuntu since quite some time now, the default for bash is to forget commands with non success exit code. This is ...
1
vote
2answers
33 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 ...
118
votes
10answers
32k 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 ...
4
votes
4answers
93 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 ...
7
votes
2answers
244 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 ...
3
votes
4answers
477 views

Shell: How do I get the last argument the previous command when it was detached?

Within the shell, typing ALT+. or using !$ recalls the last passed argument of the previous command. I use this all the time, but how do you do that when you detached the previous command? $ ...
2
votes
2answers
86 views

Is there any way to undo a bash history modification?

By pressing up, I can go through previously entered commands. I've noticed though that if I modify one of them, that alters the history. For instance, if I type: echo a echo b echo c ...
3
votes
2answers
55 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
42 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 ...
16
votes
8answers
2k 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 ...
2
votes
1answer
143 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?
6
votes
6answers
562 views

How can I reproduce commands run on one machine on another machine?

I would like to install some software on a linux-machine that I have run in VirtualBox. Then I would like to do the same thing on a linux-VPS. I think that I can save all commands that I run using ...
1
vote
3answers
45 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
27 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 ...
16
votes
1answer
942 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 ...
5
votes
2answers
256 views

Why does !! inside an alias not work?

I have this alias set in my system /etc/bashrc file: alias root="sudo !!" The intention of this being to run the last used command using sudo of course. When used, it of course appears to ...
2
votes
1answer
43 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 ...
15
votes
3answers
892 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 ...
5
votes
4answers
2k views

In UNIX, how to find the most commonly used commands in history of unix?

In UNIX, how to find the most commonly used commands in history?
1
vote
1answer
60 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
53 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 ...
8
votes
3answers
607 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
80 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. ...
3
votes
3answers
381 views

Automatic cleanup of Bash history

How can Bash history be automatically cleaned up? For example Remove detectable typos from history (ls-lh does not show up in which, so it is removed, I meant to type ls -lh) Clean excessive spaces ...
2
votes
1answer
2k views

How do I set an unlimited size to the history file for tcsh?

This is a follow-up question to Is there a maximum size to the bash history file?. Unfortunately, it doesn't work with the atmospheric science department computers, as they use tcsh rather than ...
5
votes
3answers
285 views

How to have command history with timestamps output to the terminal continuously?

I use a simple alias to enable the "tracking" of commands in one or many terminal window(s): alias trackmi='export PROMPT_COMMAND="history -a; $PROMPT_COMMAND"' Then I just tail -f my .bash_history ...
11
votes
4answers
3k 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.
1
vote
1answer
142 views

Recover my history of past commands?

Always when I turn on my Fedora 18, my history command disappear. How can I recovery all my history since I installed my OS? In my ./bash_history show olny the command of the day when I turn off ...
1
vote
1answer
253 views

How to sync terminal session command history in bash?

I've tried to search in ~/.bash_history for my recent commands while in a terminal session but they just weren't there. I guess this is because I have multiple terminal sessions open. Is there a way ...
2
votes
1answer
152 views

Commands run when terminal is open do not appear in history

I have the simple following terminal.sh script: #bin/bash --login str=(--tab --title="Test" -e "bash --login -c 'echo history';bash") gnome-terminal "${str[@]}" exit 0 I basically use it to open a ...
3
votes
3answers
186 views

How can I recall a numbered history command for edit?

I frequently search for changes with history | grep 'string' I get a list of commands in my history, along with the history line number), e.g. history | grep 'git' 755 git status 1535 git push ...
0
votes
1answer
49 views

openSuse, linux, chmod to change link's permisions

I am trying to change the permissions for the link. I want the "Other" entity to have only the read permission, but when I run the command the permissions are not changing. Is there something I am not ...
2
votes
1answer
41 views

Duplicates in history file even after HISTCONTROL specified

I am using cygwin with bash (on Windows 7 pro). I have the following in .bashrc: # Don't put duplicate lines in the history. export HISTCONTROL="ignoredups" and the following in .bash_profile: # ...
3
votes
1answer
285 views

Why does the history command do nothing in a script file?

If I create a file containing #!/bin/bash history and run it, I get no output. Running it manually in a terminal or sourceing the script file does produce output. Why does history not work from ...
0
votes
1answer
75 views

where does history timestamp stored before i enable it

I tried to set timestamp for history. My first attempt was do export EXTENDED_HISTORY=ON command, and it seems like doesn't work. Then i do echo 'export HISTTIMEFORMAT="%d.%m.%y %T "' >> ...
9
votes
1answer
2k 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 ...
14
votes
2answers
348 views

bash_history: comment out dangerous commands: `#`

To prevent logging "dangerous" commands in bash history, I have added following line to my .bashrc file: HISTIGNORE='rm *:mv *:cp *:cat*>*:pv*>*' this works well, but it has a side effect: I ...
2
votes
3answers
262 views

How can I get the last line number of unique commands when grepping my history file?

I rely on my history file for previous commands, especially ones that are long with many parameters. Once I find the command and its line number(nn) I use !nn to run it. I prefer to see the full ...
7
votes
2answers
475 views

How do I add network or user source connection data to history entries?

I would like to modify the history settings for all users on the systems that I manage. I would like it to contain the information from the connecting terminal like from who sysadmin:/ # who sysadmin ...
9
votes
2answers
912 views

Command line prediction

I've found an interesting paper: Predicting UNIX Command Lines about command-line prediction (based on user past activity), and I wonder if any actual implementation of such thing exists?
7
votes
2answers
866 views

sharing or synchronizing history between Zsh and Bash

I often find myself switching between Bash and Zsh, and using the history search functionality to recover a command. However, since Bash and Zsh have different history files, I often find that the ...
2
votes
1answer
55 views

How to use quick substitution to replace all the strings of the previous command? [duplicate]

I know I can replace a string of the previous command using ^old^new. But it seems to only replace the first occurrences as I do the follow: $ cat /proc/5742/task/5742/status ... $ ^5742^2839 cat ...
1
vote
3answers
107 views

Copy command from history to bash prompt

Sometimes I'd like to get some command from history output, copy it to bash prompt, make some changes and run it. Is there a way to copy command from a history output to bash prompt without involving ...
7
votes
7answers
639 views

Find out what command I last ran that starts a certain way?

On bash commandline environment, you can do !! to rerun your last command. And you can press up arrow to see the the last command you ran. But what if you want to only see but not run the last command ...
2
votes
1answer
165 views

Get the last executed command line in ksh

Is there a way to get the last executed command possibly together with the arguments within a ksh script? I am using mksh with cygwin. I tried fc -nl -1, but the script throws a "“fc: history ...