The command-line is the interactive interface to your shell.

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7
votes
2answers
2k views

XFCE or pure X11 commands, toggle compositing immediately without restarting X

How can i disable compositing via the command line? I need to disable temporarily for some games, like Nexuiz, for use in a wrapper script to toggle compositing status.
5
votes
1answer
2k views

Git auto-complete

I am using Git as many of you do. Also, I don't use any GUI for that — just CLI. So I was wondering: are there any way to make Git commands (git status, git checkout etc.) complete themselves when ...
1
vote
0answers
79 views

Creating and updating the packages for many Debian systems

I'm using a Lenny (Debian 5) for remotely controlled PC's (around 100 PC's) which will be pinging to my apache server. I'm developing a patch twice in a week to keep updated with the latest versions ...
2
votes
2answers
967 views

What would it take to add a command to run a script at the completion any given random task?

I was playing around with Pushover, and had the thought that it would be cool if I could use it as an argument on any random command, so that it would run a pushover script at the end of the task, ...
3
votes
1answer
2k views

Switch to an application using its PID

I'm using Gnome. In vim, I want to map a key to switch to Firefox. I know that I should use bash commands (a command in form of !...). Is it possible to switch to an application using its PID?
3
votes
2answers
2k views

Is it possible to disable verbose in the middle of running?

I am running a program fls (from the Sleuth Kit) with option -v for verbose mode. However it takes too long, and the program is still running since yesterday. I guess it will run faster without ...
3
votes
2answers
8k views

Undo `mv` command? [duplicate]

Possible Duplicate: Moved bin and other folders! How to get them back? Hi I'm in desperate need of help. I'm quite new to linux so please bear with my stupidity! I entered the following ...
1
vote
1answer
2k views

When a command is over half the terminal size it breaks

Whenever I type in a bash command longer than about half the width of the shell window I'm in, the command breaks like it would if I filled the whole screen 3rd command in image - typed a few xs ...
2
votes
4answers
15k views

How to pause listing long text file with cat in command prompt after 10lines then press any key

How to pause listing long text file with cat in command prompt after 10lines then press any key. for example: cat myfiles.txt bla bla bla bla bla bla . . . bla press enter to continue
1
vote
1answer
495 views

Sun blade 2000 - no prompt

I just bought a Sun Blade 2000 and a type 7 USB keyboard from EBAY. The blade has Solaris 8 installed and while I can login, I'd rather switch to something like UBUNTU. If I type STOP - A during the ...
17
votes
8answers
37k views

What's the quickest way to add text to a file from the command line?

Occasionally I have a thought that I want to write into a file while I am at the terminal. I would want these notes all in the same file, just listed one after the other. I would also like a date / ...
5
votes
1answer
558 views

How to make sure OpenVPN is connected?

I need some sort of "safeguard" for my VPN connection. If the connection drops, the machine shouldn't even reach the internet. (I can reach the machine by other means.) Is it possible somehow? If I ...
11
votes
1answer
10k views

Meaning of root:wheel

What does root:wheel mean in the following? chown root:wheel myfile
4
votes
4answers
1k views

Replace whole line in a file from command-line

I have a text file which has some contents similar to this: # General information about the project. project = u'Py6S' copyright = u'2012, Robin Wilson' # The version info for the project you're ...
3
votes
1answer
730 views

Live program output monitoring tool

I would like to know if there is a tool that would enable you to watch how the program output changes live. Something like tail -f but instead of monitoring the file changes, it would repeatedly call ...
22
votes
11answers
98k views

List of useful `less` functions

Rather than ask for your favorite, lets just list them off. What are the more useful commands inside less? Personally, I use: / (search forward) ? (search backwards) F (enable tail -f like ...
0
votes
1answer
100 views

Why does this compound command report errors when copying directories? [duplicate]

Possible Duplicate: Why does this compound command report errors when copying directories? if one executes the following two commands in one line, as follows, rm -rf dir ; cp -r dir2 dir ...
2
votes
5answers
1k views

Where are command line arguments (e.g. 'some.text') actually passed to?

From what I know, parameters you pass to a command, goes to it's STDIN stream. so this: cut -d. -f2 'some.text' should be perfectly identical to this: echo 'some.text' | cut -d. -f2 as we send ...
2
votes
2answers
980 views

Inner function call with xargs parameters

I am trying to create a file occurent within my /tmp directory of each file containing a speicific string. The problem is that the call to basename {} does not seem to work. Neither this, neither ...
23
votes
1answer
2k views

Is there a standard command that always exits with a failure?

I want to test my script with a command that fails. I could use an existing command with bad arguments. I could also write a simple script that immediately exits with a failure. Both of these are easy ...
8
votes
3answers
2k views

Where to start creating CLI applications? [closed]

After using linux for a month or two, I know what I'm doing now. When creating programs, using whatever language, I've obviously been using code like this: $ python test.py And so if I wanted test....
3
votes
2answers
389 views

Any CLI to validate URL? [closed]

I got a bunch of URLs (more than 1,000) and I am wondering if there is any CLI script to validate URL for http schema?
10
votes
4answers
1k views

How do I shutdown, reboot and logout the system from the command-line?

I would like to do that using the command-line, because sometimes my computer freezes and I need to force a shutdown (I know it's not good to the hardware). And: What is the difference between Halt ...
22
votes
4answers
1k views

Are Linux utilities smart when running piped commands?

I was just running a few commands in a terminal and I started wondering, does Unix/Linux take shortcuts when running piped commands? For example, let's say I have a file with one million lines, the ...
3
votes
1answer
2k views

How to do df only on root partition?

How can get df results only for / partition. The partition name/identification (/dev/sda2, /dev/cciss/c0d0p1) could vary on different computers.
5
votes
1answer
534 views

Is there an operator like && that ignores return status?

I've discovered the following useful trick for long-running tasks on the command line: do_some_task && make_a_noise For instance, on OSX: do_some_task && say 'done' However, &...
4
votes
1answer
926 views

How to run this in sudo?

I have this line that I execute from php sudo -u db2inst1 -s -- "/opt/ibm/db2/current/bin/db2 connect to PLC; /opt/ibm/db2/current/bin/db2 \"update EDU.contact set MOBILE_PHONE = '123'\"" it works ...
1
vote
1answer
4k views

Check if the command exists in bash [duplicate]

I want to check if a given command exists in bash and I care only about the native commands of the bash and not the scripts written by the user. When I refer to native commands I mean all those ...
-1
votes
3answers
408 views

Duplicate bash prompts

I'm having an interesting issue with XFCE Terminal/Gnome Terminal (not reproducible in XTerm), where executing bash or logging in using login or su will open a new Bash instance inside a Bash instance ...
3
votes
0answers
99 views

Importing hdhomerun channels into MythTV

I am setting up a MythTV backend, to stream Live TV from. I scanned for channels with the hdhomerun_config utility, and got this However, I really don't have a clue how to import it into MythTV.
2
votes
2answers
2k views

random number needed

I need a command line script that will generate a random integer between 1 and 6. I'm using Ubuntu with bash. I was working on this a couple of months ago using 'bc', but never got it to work ...
2
votes
1answer
102 views

How to make a module dynamically loadable on Debian?

I'm applying an API from maxmind. They require additional an module for Apache. Now they recommend the command: apxs -i -a -L/usr/local/lib -I/usr/local/include -lGeoIP -c mod_geoip.c -I/usr/local/...
11
votes
5answers
2k views

Is there a good combination of command-line and graphical file browser?

Is there a feasible solution than combines the advantages of a command-line and a graphical file browser? For example, the command-line is good to change the directory and execute commands but can't ...
19
votes
6answers
907 views

How stable are Unix shell “stdin/stdout APIs”?

grepping, awking, sedding, and piping are day-to-day routine of a user of any Unix-like operating system, may it be on the command line or inside a shell script (collectively called filters from now ...
17
votes
2answers
528 views

Is there a standard Unix command to check English verb conjugation?

Having recently come across wordlist and wordnet, two great discoveries on their own, I'm now looking for a similar tool, if simpler, that will take the bare infinitive of a verb and return the simple ...
1
vote
1answer
275 views

How to configure a shortcut to open a window accessed by right click on the systray icon?

The application I am referring to is Turpial and it is a Twitter client. The problem is to open the window I need to send twits, I have to right click on a systray icon and select an option. In the ...
1
vote
1answer
458 views

How to create a cron which finds/kills/clears old puppet runs?

I am a new user of bash/cron, and I was given a task to create a cron which finds/kill/ and clears old puppet runs that were not successfully installed. The more help the better, but I am more or less ...
6
votes
4answers
2k views

Is there a difference between these two commands?

cat a > b and cp a b If they are functionally the same for all intents and purposes, which one is faster?
2
votes
0answers
35 views

Batch up a number of jobs to run concurrently [duplicate]

Possible Duplicate: Four tasks in parallel… how do I do that? I have a group of jobs to run (a few hundred jobs) - they have a variety of command names and parameters. Each one runs ...
5
votes
1answer
1k views

Redirect terminal output to image file

I need to programmatically run some unix commands and get the output in a image file, the format could be png or jpeg (jpg). The commands are run in an AIX (IBM *nix) machine. I don't have ...
1
vote
2answers
479 views

Command-line web browser with Kerberos authentication?

QUESTION: Is there a Kerberos-friendly web browser usable via an SSH console? I have tried links but it does not seem to work with Kerberos (the webapp asks me for login/password even though I have a ...
3
votes
4answers
297 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 ...
7
votes
2answers
807 views

Shell Script for going through a dir recursively and chmodding based on conditions of file type

Can anyone point me to either code or a tutorial for writing a shell script that can recursively go through an entire directory structure (starting at the current working directory, or given an ...
1
vote
2answers
874 views

Search and delete .Trash

I have 4 large USB devices with lots of backups collected over the years. I want to search for all .Trash folders and delete the contents on Fedora 17. I tried the following which failed:- # ...
2
votes
1answer
607 views

Creating a list of unique senders from Thunderbird mail files through the command-line

I've got some large mailboxes and using Thunderbird, that means that I have several mbox files. These single files contain all e-mails in a particular folder. Now, I would like to get some data on the ...
1
vote
1answer
139 views

attr man page missing?

How does one search for certain manpages (such as http://linux.die.net/man/5/attr)? Trying: man attr and man -K attr don't seem to work. Any ideas why?
0
votes
1answer
851 views

OSX : rmdir “permission denied” but directory removed

This is a question from a newbie trying to learn UNIX commands. I was trying to test the rmdir command by removing a test directory located in my Downloads directory. I have read and write rights on ...
11
votes
2answers
2k views

Where has the trailing newline char gone from my command substitution?

The following code best describes the situation.  Why is the last line not outputting the trailing newline char?  Each line's output is shown in the comment.  I'm using GNU bash, version 4.1.5 ...
2
votes
2answers
357 views

CentOS 5.6 live time feature without repeatedly executing date command

I am using CentOS 5.6, is there a way to view a "live" time, without constantly executing the date command? Constantly excuting the date command can be quite frustrating and repetitive when checking ...
2
votes
2answers
1k views

what does Curl's stand-alone hyphen (-) mean?

what's the stand-alone hyphen (between the -C & -O) stand for in this command? curl -C - -O http://www.intersil.com/content/dam/Intersil/documents/fn67/fn6742.pdf FWIW- I'm following a ...