General :: Playing With Various Characters In The Command- Line Interface?
Apr 23, 2010I am playing with various characters in the command- line interface trying to learn what they mean and when i should use them.
View 7 RepliesI am playing with various characters in the command- line interface trying to learn what they mean and when i should use them.
View 7 RepliesI have a bunch of files (around 900) that have some special characters. Some of the files contains example, and quoting "[useless] filename (something)"so what I want is just to strip the brackets and parenthesis, some are folders, others are text files
View 1 Replies View RelatedI've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program(there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]".Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.?
(Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
I've written myself a linux program "program" that does something with a regular expression. I want to call the program in the bash shell and pass that regular expression as a command line argument to the program (there are also other command line arguments). A typical regular expression looks like "[abc]_[x|y]". Unfortunately the characters [, ], and | are special characters in bash. Thus, calling "program [abc]_[x|y] anotheragument" doesn't work. Is there a way to pass the expression by using some sort of escape characters or quotation marks etc.? (Calling program "[abc]_[x|y] anotheragument" isn't working either, because it interprets the two arguments as one.)
View 8 Replies View RelatedI am doing a school project in which I want to get the bandwidth of a network interface at any given second, or some other small increment of time. I need this for a Perl script I am working on. Therefore it needs to be non-interactive and just prints results.
View 2 Replies View RelatedI have a service which I want to run over eth1.
But all my other traffic still needs to run over eth0.
Is it possible to force a command-line tool or other application to use the non default interface?
I want to sort a number of lines based on their size:
data:
-------
12345678
87654321
1234
[code]....
Should output as:
-----------------
1
2
12
21
[code]....
But i'm gettings this with sort
----------------
1
12
123
1234
[code]....
Can we sort the above "data" text, based on "number of characters" instead of "character order"?
i have a bunch of shorten files i want to play from the command line and ffplay will play them one at a time but i want to play them one after the other (the whole album)does not work i must have forgotten something as it plays one track then stops.
View 1 Replies View RelatedI'm developing in java.
I want to create a GUI interface for some command line commands (drush - drupal).
How can I interact with the command line commands with java? or any other languege?
So I just partitioned my hard-drive, one side with windows the other to set free for ubuntu. It all worked fine. I put in the liveCD of ubuntu 9.10 and installed on to the partition. However, I have a problem. When it boots up it asks me to either boot into linux 2.6 or windows 7. Windows 7 works fine, but when I boot into ubuntu, the loading screen comes up and then it doesn't seem to boot into GDM. It's all command-line interface. I've tried sudo apt-get update and upgrade, but it isn't connected to my network yet so I can't do that. What can I do?
View 9 Replies View RelatedOccasionally Lucid boots to what I can only describe as a command line desktop-ie the whole screen is like a terminal, theres no GUI, have to restart by hitting the power button. Is there anyway I can stop it, or start the GUI from there?
View 4 Replies View RelatedI stupidly turned off my computer as I was updating to KDE 4.7. Now when i start it i get to the log in screen, but imputting my username and password just causes the Xserver to restart and i get back to the log in screen.I know there are many other packages I should install as part of the update and i think this will solve my problem, so i am trying to connect to wireless through the command line login, and then install the updates.
View 2 Replies View RelatedIve been struggling to configure a wireless interface on Fedora 9I need to configure wlan0 command line only with NO display managerIve tried setting up /etc/sysconfig/network-scripts/ifcfg-wlan0 with the right information, doing dhcpbut no ip is retrieved. Checking the dhcp server logs on the DHCP server - no request is received.The link light on the wireless nic is not on either. iwconfig shows it has an Access point associated and an ESSID but im not getting back any IP.There seems to be very little documenta on how to set up wireless nics command line only on Fedora
View 1 Replies View RelatedI've been having issues setting up the wireless interface on my Ubuntu server (command-line only, no GUI) and I can't seem to get it working. It seems as though the card is recognized, the drivers are installed and the interface is up, but it fails to connect. I have no idea where I'm going wrong. I have WPA and a MAC filtering setup on my wireless router. An exception has been made for this PC's MAC address and I've manually entered the connection details into /etc/network/interfaces.
[Code]...
if its possible to change font size or style on CLI.
View 9 Replies View RelatedI have installed Ubuntu 6.06 LTS via the command line interface. I installed onto Microsoft Virtual PC on the mac. The installation completed successfully. On first boot, I see the text is spread out very wide on the screen. It's like the screen has been zoomed out greatly.
I assume I have to modify the x11 configuration, but I forget how to do this.
Here is an image of the screen:
I tried installing a more recent version of Ubuntu but ran into other troubles. more on that later.
I need to use some PCs located on my university from home through the internet. I am using a program called Teamviewer [URL]... The problem is that this program transmits the whole graphical interface, which is slow, but I just need to use the command line with these computers. I am aware of ssh, but my university won't give me access to theses computers over the internet.
View 9 Replies View RelatedWe have a list of cyclones in the world. Now i got to check whether or not the second field is more than 1000 mm. If so, than the line has to have a[*] at the end of the line. For exemple:
Australia:1411:55.55:Mackay Cyclone 1918:1918:Mackay
to
Australia:1411:55.55:Mackay Cyclone 1918:1918:Mackay[*]
I also have to use a substitute. So far i've got this but it fails, 6,$s/([0-9])111:1/.* [*]
I want to be able to use Ctrl+R to have reverse-i search. Also if I press Shift+Up Arrow after typing the first few characters of a recently executed command then the shell should complete the command by finding the most recent commmand having the same first few characters.
View 1 Replies View RelatedAny time the word The appears at the beginning of a line, I want to move it to the end of the line and capitalize the new first word in the line. For example, The heaven becomes Heaven the. I'm trying to test this out for my Library.
View 2 Replies View RelatedI'm having trouble setting up PuTTY with Ubuntu. I'm trying to get line characters to work in aptitude as well as 256-color support, but can only get one or the other.
Ubuntu Config:
Using 64-bit Ubuntu
Terminal type xterm-256color or putty-256color gives 256-color, but incorrect line characters.
Terminal type linux gives proper lines in aptitude, but only 16 colors.
PuTTY Config:
Using font with Unicode characters. (DejaVu Sans Mono)
Received Data is assumed to be in UTF-8.
Set to use Unicode line drawing code points.
Output from locale:
I wish to replace a new line with br (html) but it doesn't seem to work
Code:
message=$(echo ${FORM_message} | tr '
' '<br />' )
what it gives me seems to be ... b...? I am also having problem escaping hash sign in cut command:
Code:
list=$(echo "$line" | cut -d'#;#' -f1) ;
my intention is to split the line with "#;#"
Is it possible to carry out mysql commands directly from the ubuntu cli rather than open mysql?eg to create a database I would normally type
Code:
user@localhost:~$ mysql -u root -p
then INSIDE the mysql CLI I would type
[code]....
I have a log file that contains information like this:
----------------------------
r11141 | prasath-palani | 2010-12-23 16:21:24 +0530 (Thu, 23 Dec 2010) | 1 line
Changed paths:
M /projects/
M /projects/
[code]....
what i need is, i need to copy the data given between the "---" to seperate files, for, e.g. the first set of data between the "---" should be in one file and another set of data in another file.
When I upload a file usind the scp that contains the German characters these characters get changed to . For example, a sentence in an html file like this
looks like this
Why are this characters getting changed?
When i am running ps -ef command I am getting the execution of the commnad in "80characters"
View 5 Replies View Relatedsed '/
$/ {N s/
//}'
sed: -e expression #1, char 10: extra characters after command
I want to understand what is wrong with my command line. When I can do the some of following in a script but not in a command line. I have been working through the tutorial at [URL]. When I got stuck at the section Working with Multiple Lines. These script works fine.
#!/bin/sh
sed '
# look for a "#" at the end of the line
/#$/ {
# Found one - now read in the next line
N
# delete the "#" and the new line character,
s/#
//
}' file
In my case I am looking for or return ^M.
#!/bin/sh
sed '
# look for a "#" at the end of the line
/
$/ {
# Found one - now read in the next line
N
# delete the "#" and the new line character,
s/
//
}' file
The problem is when I try to convert it to a single line shell command it gives me an errors.
sed '/
$/ {N s/
//}'
sed: -e expression #1, char 10: extra characters after command
sed '/
$/{N s/
//}'
sed: -e expression #1, char 9: extra characters after command
sed '/
$/{Ns/
//}'
sed: -e expression #1, char 8: extra characters after command
I want to understand what is wrong with my command line. When I can do the following in a script but not in a command line. I have created a sed script to do the work I want.
cat test.sed
#!/bin/sed -f
/
$/ {
N
s/
//
}
Need little advice running this command.
watch -d 'ps aux | awk '{print $4" "$11}' | sort | uniq -c | awk '{print $2" "$1" "$3}' | sort -nr | head'
I get this error message from AWK. awk: cmd. line:1:
{print awk: cmd. line:1: ^ unexpected newline or end of string
I have tried all the usual by trying to escape the single and double quotes in the command but same result. The end result should be the a listing of memory hungry processes that are scanned every 2 seconds (watch default value).
Anybody know and command to count any characters in file? I would like to know the total number of character " (quote) in file. My idea is to check if in a script the total number of this character is pair.
View 4 Replies View RelatedI'd like show a certain line or lines of a file with context, kind of like a unified diff, on the command line in Linux:
$ (something) -l 154 stuff.py
150: def foo(bar):
151: """
[code]....