recall commands previously typed in a shell or other utility

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5
votes
1answer
137 views

Why does `!45` get replaced with `top`?

I was trying to a string search within Ubuntu 12.04 which went as follows: find . -exec grep -l "!45" {} \; Instead of searching for the string "!45", it was replaced with top. It didn't invoke the ...
3
votes
1answer
44 views

How to revert direction for last parameter shortcut?

I can append a last used parameter via the keyboard shortcut Alt + . yet sometimes, I type too fast and miss my actual target. If I wanted to go back one instance, is there a way to do it? I ...
4
votes
1answer
91 views

History of commands and directories we were in

I was wondering: If I type history I can see the previous commands I typed and see what happened and perhaps keep commands as reference. But I don't know in which directory I was when I typed the ...
2
votes
3answers
207 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? $ ...
4
votes
3answers
161 views

Use bash history file from old machine when setting up new machine?

I love my bash history. Sometimes I've issued really long commands and I really depend on my bash history to get them back quickly. I've increased my history size with: HISTSIZE=100000 ...
1
vote
0answers
30 views

why bash history overlap the prompt when scroll up in the history? [duplicate]

I customized my bash prompt, PS1 value. ~/.bashrc: Color_Off='\e[0m' # Text Reset BGreen='\e[1;32m' # Green BPurple='\e[1;35m' # Purple BWhite='\e[1;37m' # White ...
25
votes
3answers
2k 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).
4
votes
4answers
162 views

echoing symbols in terminal/bash

Why am I not able to use "!" when trying to echo a message in terminal? For example: echo -e "Hello\nWorld!" bash returns the following command: bash !: event not found
3
votes
3answers
135 views

Persistent shell arguments

I often find myself running a series of commands on a single set of arguments. For example: $ nmap -Pn -sS 192.168.1.5 $ ssh 192.168.1.5 $ curl 192.168.1.5 $ wget -r 192.168.1.5 This can be sped ...
1
vote
0answers
86 views

Zsh: quickly bookmark commands

I just had an idea, I'm sure it must exist though I could not find anything on the web. This topic gets close to my idea but not enough: How to quickly store and access often used commands? I'd like ...
1
vote
1answer
172 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 ...
17
votes
5answers
1k views

In what situations would a user not let the shell record his command into history?

If I add export HISTCONTROL=ignorespace in .bashrc, bash won't record any commands which have whitespace before them into history. But I do not understand under what situations it will be useful. ...
3
votes
3answers
174 views

Lots of text files into one big text file

I want to combine thousands of little text files into one big text file. I have them in directories with the structure: timestamp1/status.txt. For example: 20130430133144/status.txt. So far, I know ...
4
votes
1answer
146 views

Per-directory history in zsh

I am happily using zsh since a while now, and I am quite satisfied with my history settings, which are: # Write to history immediately setopt inc_append_history # History shared among terminals ...
3
votes
1answer
87 views

Keep two bash history files, one with ignoredups, one with everything

For the purposes of looking at which commands I am using the most, I'd like to keep a record of command I type in my bash history (even duplicates). But, for sanity and ease of use, I still want to ...
4
votes
2answers
131 views

Bash Command (History) Number In PS1

I am a noob in bash to be honest. I have Googled around and cannot find an answer to this: history lists previous commands and their number e.g. $ history 286 clear I want to be able to see the ...
1
vote
3answers
252 views

Best tool for monitoring server usage

I was just wondering what the best tools for retracing logs and what logs I should be checking to work out what's going wrong with a server, or what the client has executed to get the server into it's ...
1
vote
1answer
121 views

Enable previous command cycling at ftp prompt

Currently on pressing arrow keys or Ctrl+P/N, I see characters like ftp> ^[[A ftp> ^[[B ftp> ^P ftp> ^N I would like to know, how to configure the ftp prompt so that I am able to view ...
7
votes
1answer
4k 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 bah history. Is there a clean way to remove those entries? Obviously I could close the shell and edit the ...
-2
votes
2answers
682 views

History command in ksh not able to use [closed]

I am using the ksh shell. I am not getting any impact of these following commands. It is executing without any error but it is not giving the proper results. export HISTTIMEFORMAT='%F %T ' Use the ...
3
votes
1answer
45 views

How can I prevent edited commands from overwriting the original? Or revert edits?

Often I'll execute a command in bash, press the up arrow to retrieve it from history, edit it, and execute the edit. However, sometimes I'll decide to discard the edit and run a different command or ...
4
votes
3answers
131 views

Can any shell do argument-level interactive search?

Sometimes I need to reuse certain long arguments like paths. If I use history search (CTRL+R), I may find some command that contains the path, but I still need to delete anything else in the old ...
4
votes
2answers
1k views

How to delete commands in history matching a given string?

I need to delete all commands in my history matching a string. I've tried: $ history | grep searchstring | cut -d" " -f2 | history -d -bash: history: -d: option requires an argument $ history | grep ...
1
vote
1answer
584 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
3answers
1k views

How to run the most recent command on AIX?

How can I run the most recent command again from history in AIX Server? And how to edit the most recent command and run it again in AIX?
1
vote
2answers
860 views

Shell - Deal with multiple command history files

Where I work, for security and auditing purpose, we have to keep one history file for each session (user, date, terminal, etc in the file name). Obviously, the HISTFILE variable, is set to read only ...
9
votes
2answers
689 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?
5
votes
1answer
364 views

Why does this PS1 value cause unexpected behaviour? [duplicate]

Possible Duplicate: Why is my bash prompt getting bugged when I browse the history? I have set my PS1 variable in .bashrc to be the following: PS1='\e[35m[\W]:\e[0m ' It achieved what it ...
9
votes
1answer
641 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 ...
7
votes
1answer
908 views

Bash history with timestamps

I would like to keep timestamps on the commands logged in my Bash $HISTFILE, is it possible? I did not manage to set it up using man bash as an information source. My other options are as follows: ...
12
votes
1answer
7k 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?
8
votes
3answers
2k 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 ...
8
votes
2answers
953 views

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

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 ...
3
votes
2answers
237 views

Searching command history

I search the terminal command history by pressing Ctrlr but what if: This is an old command This is an | less -S older command I press Ctrlr and then I type "this is an" and the old command commes ...
8
votes
2answers
526 views

Saving bash history from multiple Konsole not working correctly

I use multiple Konsole terminals. And I want all the commands I type in every terminal to be saved in command history, so that next konsole i open will have all of them. To prevent each terminal from ...
2
votes
0answers
184 views

Tcsh: Searching history using Ctrl-P and Ctrl-N

What are the equivalent functions in tcsh for the following zsh functions? up-line-or-history history-beginning-search-backward down-line-or-history history-beginning-search-forward I have the ...
1
vote
2answers
455 views

Why “reverse-i-search” does not work on my centos sytem?

When i press CTRL+r, the "reaverse-i-search" works well: but then when i press "arrow up" key, none history commands show, just nothing happens! Any configuration not compare?
1
vote
0answers
326 views

How to use history commands with readonly PROMPT_COMMAND?

I'm sometimes logged in on a host which I do not control and where PROMPT_COMMAND is readonly. Is there some way to work around this to run history commands anyway, for example using PS1? I've tried ...
1
vote
4answers
268 views

How can I do the `history` command and not have line numbers so I can copy multiple line commands?

Sometimes I do the history command so I can see 4 commands in a row. I want to copy those commands so I can run them again. I usually select them with the mouse and shift-ctrl-c which works ok, but ...
16
votes
4answers
769 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 ...
12
votes
1answer
3k 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 ...
2
votes
3answers
2k views

How to save command line history without logout? [duplicate]

Possible Duplicate: Is there a way to make the history when pressing up in bash shared between shells? I am opening more than one console tab and I want to use commands that executed from ...
1
vote
4answers
852 views

Terminal with “repeat last” button

I'm often compiling stuff and therefore repeating the same command over and over, so I'd like to benefit from my "visual memory" and have a sort of "repeat last command" button attached to a terminal. ...
2
votes
1answer
137 views

How do I create history files with date automatically attached?

E.g. at the end of the session for each day I want to create a history file with the date attached at the end. So, say, history > history07162012.txt or something like that.
7
votes
1answer
604 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 ...
9
votes
2answers
489 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 ...
2
votes
4answers
362 views

Prevent a command from being executed after another command

I would like the shell to warn me for potential errors I'm about to make. How can I prevent a command cmd2 from being executed after cmd1. For example: $ tar tf file.tar $ rm !$ Here, I just ...
11
votes
2answers
520 views

Keep only successful commands in BASH history

Sometimes I misunderstand the syntax of a command: # mysql -d test mysql: unknown option '-d' # echo $? 2 I try again and get it right: # mysql --database test Welcome to the MySQL monitor. mysql ...
3
votes
4answers
245 views

Change working directory of 2 terminals at once

I've typically have gnome-terminal open with ~8 tabs, using 2 consecutive tabs for the same task (one has emacs, the other is used to do git checkins and unittest runs and so). When changing tasks, I ...
2
votes
1answer
804 views

How do I preserve the history file of cygwin bash across independent sessions?

So my home directory does have a .bash_history file, but it refuses to grow any bigger for some reason. I've already changed the .bashrc settings to set the history size to 99999 and the history file ...