A shell is software that lets users interact with the operating system, usually by typing at a command-line.

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17
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9answers
50k views

Opening Explorer shell with admin privileges on XP (with IE7 installed)

I used to demote my user account so that it had no admin priveleges and used a 'sudo-like' trick where you create a shortcut to IE6 and enabled the 'Run with different credentials' option to open a ...
12
votes
4answers
2k views

Who deals with the star * in echo *

Who deals (interprets) the * in echo * Does the echo see the star or the shell take care about it and return a list of filename .. What about cp temp temp*
12
votes
4answers
10k views

Terminal Vs. Shell [duplicate]

Possible Duplicate: What are the differences between shell , console & terminal? This probably sounds like a stupid question but I'm having a lot of trouble clearly differentiating ...
11
votes
1answer
373 views

Is there a way of using ctrl-r after typing part of command in bash?

In bash the Ctrl+r command is very useful, I type Ctrl+r whatever and it searchs my history for commands containing the word whatever. But if I type whatever and realize that I would like search that ...
9
votes
3answers
2k views

Is there a shell which supports fuzzy completion as in Sublime Text?

I'm using bash and I was wondering if there is any plugin in bash or other shell which allows me to do this cat tfnislong.txt + [tab] completes to cat ThisFileNameIsSoLong.txt just like tab completion ...
9
votes
3answers
56k views

how can i install CentOS 6 without the gui?

i just downloaded the centos 6 live cd and i tried installing it on virtually and i am never prompted to install centos with/without gui and its all automated. what happends is after i am booted into ...
7
votes
1answer
28k views

Bash & 'su' script giving an error “standard in must be a tty”

Folks, I'm having an issue with a bash script which runs a particular command as a different user. The background: Running on a Linux box (CentOS), the script is quite simple, it's starting the ...
6
votes
4answers
8k views

Can I use pipe output as a shell script argument?

Suppose I have a bash shell script called Myscript.sh that need on argument as input. But I want the content of the text file called text.txt to be that argument. I have tried this but it does not ...
6
votes
2answers
2k views

How can I get emacs under windows to autocomplete paths in shell buffers using “\” instead of “/”?

I'm using emacs to work on linux, windows, osx and everything is fine except one annoying problem with shell buffers under windows. Autocompleting filenames would work great (better than standard ...
6
votes
6answers
3k views

What is the difference between “Shell” and “Terminal”? [duplicate]

I am fairly new to Ubuntu and I am loving it! But I don't quite understand the difference between the shell and the terminal. Can any one explain? Someone told me that a terminal is just a "tool" to ...
3
votes
2answers
6k views

How do I run an Automator action, shell script or AppleScript on startup in OS X?

I know you can run applications on startup on a Mac, but can you run an Automator action, a Service, a shell script, or an AppleScript on startup instead? I also know you can save all of these as an ...
18
votes
7answers
19k views

Stop Windows 7 Explorer from automatically expanding folders

Windows 7 Explorer can be opened in any folder from the command line. But, it automatically expands (on the left nav panel) the Favorites, Desktop, and [Username] folders. This makes it hard to see ...
14
votes
9answers
11k views

How do I copy file named starting with a dot?

I am trying to copy all files under directory A to directory B. All files under directory A are starting with dot, for example: A/.a A/.b A/.c which I found if I use: cp A/* B, always get error: ...
12
votes
3answers
4k views

How can I launch a file properties dialog from the command line?

It's simple programmatically with ShellExecute to specify the properties verb when instructing Windows to open a file, but can this be done from the command line or run box? Ideally I'd like to do ...
10
votes
7answers
4k views

re-use '~/.profile` for Fish?

(I'm talking about the shell Fish, esp. Fish's Fish.) For Bash/ZSH, I had ~/.profile with some exports, aliases and other stuff. I don't want to have a separate config for environment variables for ...
9
votes
4answers
9k views

Run a GUI app on remote computer from SSH

I want to run a GUI application on my Ubuntu computer, but it should started by a shell script on my Debian server trought SSH. Is this possible?
8
votes
8answers
5k views

Ending a process in unix instead of interrupting it

At the unix command line if i press Ctrl-C,that does not end a process but rather interrupts it and i return to the shell prompt. So,i have the following two questions: 1.Is there a way i can see the ...
7
votes
2answers
2k views

Smart tab completion (for directories)?

Are there shell versions that have a more intelligent tab completion? I'd like to be able to type cd foo-<TAB> Then it would show me the possible completions along with numbers that I can ...
6
votes
4answers
8k views

How to rename a file inside a folder using a shell command?

I have a file at some/long/path/to/file/myfiel.txt. I want to rename it to some/long/path/to/file/myfile.txt. Currently I do it by mv some/long/path/to/file/myfiel.txt ...
6
votes
2answers
897 views

Potential issues with adding /usr/local/[s]bin to root's path?

I've noticed that the root account $PATH does not include /usr/local/bin or /usr/local/sbin by default. Are there any potential issues that could arise from adding those directories to the path? If ...
5
votes
1answer
3k views

Bash, how to globally fix ^H and ^? backspace problems

I'd like to fix this frequent problem where the shell on a remote server thinks my terminal's backspace key is ^? and sometimes it thinks it is ^H, and happens to be incorrect and outputs the wrong ...
5
votes
4answers
17k views

How do you replace the logon shell with iexplore?

This is related to my previous question. Apparently I didn't know what I thought I knew.. Like said in my last post, I am looking to make a kiosk where when it starts up, it goes straight into ...
5
votes
4answers
2k views

Does “chmod 777 .* -R” chmod parent directories (..)?

Does chmod 777 .* -R change the mode of parent directories (..) recursively?
4
votes
4answers
2k views

Convert symbolic links into corresponding target files [duplicate]

I have several symlinks to other files in a directory. I want to convert these links into independent files. Is there a command that does this?
4
votes
3answers
723 views

linux shell, keep task alive for specified time

I am looking for a tool to keep a task alive (restarting if necessary) for a specified amount of time (in seconds), and then kill it and stop. For example: keep_for 3600 rsync foo bar:faz should for ...
4
votes
1answer
1k views

Shell scripting: Way to parse parameters from command line

myscript [-a a-arg] [-c c-arg] [-b] [-e] somedirectory Given that I want my shell script be invoked at the command line using the above parameters - where [these brackets] denote that they are ...
3
votes
2answers
260 views

What is the equivalent of root in Windows 8.1, and how can I open a shell in that context? [duplicate]

I've heard the equivalent of root is the "SYSTEM" account. But I used a tool called "RunAsSystem" to open a shell as SYSTEM, and I'm still getting "access denied" errors even though I know the files ...
3
votes
1answer
5k views

OS X (Unix) shell command: possible to get last opened date of file?

when you use the following command find /Users/someUser/someFolder/* -type f -mtime +90 you'll get all the files that have a modification date that is bigger than 90 days. If you open however the ...
2
votes
2answers
2k views

How to check what slows down my terminal startup?

Is there a way to check what slows down my terminal startup? I'm using zsh with ohmyzsh on iTerm2. It takes about 10 second to open a new window :( This is my zshrc file: export ...
2
votes
1answer
19k views

Call putty/plink to start a remote SSH linux script with user input

Seemingly simple question, which yields slightly undesired results. Execute putty to start a script on a remote linux server which requires user input The remote script does a read -p "Please enter ...
2
votes
1answer
913 views

Easy way to columnize STDOUT (format text in columns)?

I just want an easy way to columnize output to the terminal. Don't care about colors. (Well, actually I do quite a bit! But there is the awesome, easy-to-use ANSI Color for that.) Shell scripts ...
2
votes
3answers
745 views

What escape code do I need in PS* to make sure terminal is back in normal settings on shell prompt?

Sometimes I accidentally cat some binary data; sometimes some ncurses program crash - for plenty of reasons terminal can end up in bad state, requiring manual reset. This is happening too often. Such ...
2
votes
8answers
2k views

Why does “ls -a” hide some existing directory from the root user?

Today I found something really interesting (at least to me) on one of our test servers: I can change into an existing directory from my actual working directory using a relative path, but that very ...
0
votes
2answers
278 views

Putting code into registry command key

I'm trying to do what's done in this question, but I want to attach it to a context menu on Directory so I can right-click on "Flatten Folder" and have it do it for me. That is, bring all the ...
11
votes
3answers
16k views

TortoiseSVN overlay icons do not appear when installed by a different user account?

I've installed TortoiseSVN on my work Windows XP machine as the administrator. When I login in as a standard user my working copies do not display the overlay icons in Windows Explorer. I found this ...
10
votes
4answers
3k views

BASH history truncated to 500 lines on each login

For some reason, I cannot get my system to keep my BASH history after a reboot. Here are the relevant sections of my ~/.bashrc: shopt -s histappend PROMPT_COMMAND='history -a; updateWindowTitle' ...
9
votes
6answers
8k views

Clear stdin before reading

I have the following bash script: # do some time consuming task here read -p "Give me some input: " input Now as you might have guessed, if a user presses some random keys during the "time ...
8
votes
4answers
862 views

Running `exec` with a Bash built-in

I defined a shell function (let's call it clock), which I want to use as a wrapper to another command, similar to the time function, e.g. clock ls -R. My shell function performs some tasks and then ...
7
votes
3answers
14k views

Is it possible to use putty as the UI for the Windows shell?

PuTTY is much better than cmd.exe. Can I use PuTTY to execute Windows commands?
7
votes
3answers
1k views

`which python` points to the python I want, but `python` runs the wrong version

I want to use python24 provided by ports, so I've installed it, and python_select -s shows that the version I want is indeed selected. Running which python gives /opt/local/bin/python, and running ...
7
votes
6answers
9k views

Why does my LD_LIBRARY_PATH get unset launching terminal?

I have a shell script to set up some environment variables and launch whatever program I send in as an argument: export PATH=$HOME/local/bin:$PATH export ...
6
votes
5answers
14k views

rsync using regex to include only some files

I am trying to run rsync to copy some files recursively down a path based on their file name pattern, case insensitive. This is what I have done to run rsync: $ rsync -avvz --include ='*/' ...
6
votes
4answers
3k views

Windows 7 - Add shell command for .png file

On Windows XP, you could go to Folder Options - File Types, select PNG, create a new action, such as this Action: Crush Application: "F:\Programs\PNGCrush\crush.bat" "%1" So you can right click on ...
6
votes
2answers
9k views

How do I clear all environment variables from a Windows shell session?

If I start a new Windows shell session and type: env I see lots of environment variables set. I want to debug the running of a command line program by removing all environment variables from the ...
3
votes
1answer
1k views

Remote SSH Commands - bash bind warning: line editing not enabled

I am using bash 4.3.11(1) and have the following history plugin installed (via .bash_it): # enter a few characters and press UpArrow/DownArrow # to search backwards/forwards through the history bind ...
3
votes
1answer
1k views

grep fails in upstart script

I have an upstart configuration for a service which needs to check the existance of a process on it's startup. This sounds fairly easy but I'm already trying for 3 hours to get this thing solved and ...
3
votes
1answer
867 views

Parse multiple HTML to text and rename as parent Directory

In a directory there are many folders .html inside, I would like all HTML parsed as new .txt with the name of the parent directory. Example1/ Index.html>Example1.txt Example2/ ...
3
votes
1answer
2k views

How to delete readonly variable in bash?

$ mySite="superuser" $ readonly mySite $ unset mySite bash: unset: mySite: cannot unset: readonly variable How can we delete mySite, as it is a readonly variable?
3
votes
3answers
4k views

How to store a Unix alias?

I know I can create an alias for untar like this alias untar=’tar -xvzf’ How do I make this persist from session to session, because it seems it is lost when I reconnect?
2
votes
1answer
400 views

Linux shell: how to add prefix string to stderr message?

I am running several tasks simultaneously at background. command_a | tee > command_a.log & command_b | tee > command_b.log & If everything is fine, then messages will be saved to log ...