General :: Command Line - Print A Group Of Text Matching A Regex?

Sep 22, 2011

I'd like to print only few groups from text matching a regex. How can I do that in the Linux command line?

What other tools for text processing are there in Linux?

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General :: SQL Like Group By And Sum For Text Files In Command Line?

May 2, 2010

I have huge text files with two fields, the first is a string the second is an integer. The files are sorted by the first field. What I'd like to get in the output is one line per unique string and the sum of the numbers for the identical strings. Some strings appear only once while other appear multiple times. Given the sample data below, for the string glehnia I'd like to get 10+22=32 in the result. how to do this either with gnuwin32 command line tools or in linux shell?

[Code]...

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General :: Parse A File And Print Each Line That Ends With Matching Pattern (if The Next Line Is Blank)

Aug 2, 2010

I've written a script to parse a file and print each line that ends with matching pattern, if the next line is blank. The pattern lines are the result of md5sum $i|sed 's/path///g' so that only md5 and filename appear. Here's what I'm using.

Quote:
for fline in `sed -n '/.*.ext$/p' file1`
do
if [ "`sed -n -e '/'"$fline"'/ {n; p;}' file1`" == "" ]
then
echo ""$fline" has no info" >>file2
fi
done
[Code]....

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Ubuntu :: Text Manipulation - Regex - Pattern Matching?

Jul 12, 2010

Are there some good tutorials or reference materials on how do pattern matching and text manipulation in Linux?I have a few simple tasks I'd like taken care of...like formatting numbers in file names, stripping some text from directory names, etc

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General :: File Matching Pattern On Command Line?

Sep 9, 2011

I've got files in a directory as follows:

1.png
1_thumb.png
1-1.png
1-1_thumb.png

[code]....

I want to list all the files that don't have a copy with the same filename with -1 somewhere in it. So, in the example above, the results would be 3.png.

NB: the file and its copy with "-1" in it will be the same filesize, if that helps.

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General :: Find/grep/wc Command To Find Matching Files - Print Filename And Word Count?

Sep 11, 2009

I am trying to do a find/grep/wc command to find matching files, print the filename and then the word count of a specific pattern per file. Here is my best (non-working) attempt so far:

wc `find . ( -name "*.as" -o -name "*.mxml" ) -exec grep -H HeightResizableList {}` ;

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Programming :: ! For Not Matching Bash Regex?

Jan 13, 2011

In a bash-script, only the case if a regular expression does not match is relevant.herefore I used the exclamation mark !. But where to place it?

These two work fine, but are they equivalent?
Code: if ! [[ $abc =~ $pattern ]]; then or
Code: if [[ ! $abc =~ $pattern ]]; then Where is the ! placed more correct?

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Programming :: Perl Regex Matching HTML?

Mar 19, 2010

I'm trying to find out how to extract the string between the 2 <title> tags: <title>this is what i want</title>.I found lots of results but nothing I've tried works.. EG:$page =~ m/<title>($.)</title>/gism;

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General :: Tail Command Syntax To Print A Sequence Of Line ?

Dec 21, 2010

How to print a sequence of line say line number 10 to 20 of a 50 line file ?

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Ubuntu :: Bash - Delete First File Matching Regex?

Mar 27, 2011

In a bash shell script, I want to do something like this:

Code:
if [[ $(ls -ld /some/dir/foo_* | wc -l) -gt 4 ]]; then
rm -rf first_match_of /some/dir/foo_*

[code]....

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General :: Printing From Command Line Won't Work - Just Sits In Print Queue

Apr 3, 2011

CUPS was not originally installed on my server, I have installed it but cannot print to my network printer. On my laptop, I can... they are both running the same version of Debian. What could be missing?

Here are some details...

I have two computers running the same version of Debian. One is a server with no GUI and the other is my laptop with GDM installed. My laptop (which prints with no problem) is connected via Wifi. My server is connected directly to the router via Ethernet. I cannot print from the server.

The printer is a Canon Pixma MP495 that connects to the router via Wifi. I have downloaded drivers for the printer from [url] and installed them successfully using dpkg on both computers.

Right now I have a regular text file that I am using for a test page. To print from my laptop (with success) I type:

Code:

This does not work from the server. What could I be missing?

lpq run on server:

Code:

lpinfo readout:

Code:

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Programming :: Perl Only Matching Single-character Regex Patterns?

Jan 20, 2009

I'm having a small issue with regex matching in Perl. I'm pretty certain it's a simple fix, but it all looks correct to me...

If I run the following:

Code:

It prints out all the lines containing a 'P', as one would expect. But when the regex is

Code:

I get zero lines printed. It seems to match only single-character patterns.

The file I'm reading is: (It has the same effect whether I leave it with Windows linebreaks or convert them to unix).

Code:

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Programming :: Perl Regex Not Matching Across Multiple Lines Despite Ms Flags / Fix It?

Aug 16, 2010

I have written a regular expression (tested in regexpal and regextester alpha something) with which I want to replace something like code...

but it only matches functions which occupy one line only, despite my tests showing multiple line matching in javascript testers online and using the m and s flags (which should make it multi line no?)

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General :: Text To ASCII Art Command Line Tool?

Oct 24, 2010

I want a command line tool that echoes a string in ASCII art way, like here.

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General :: Insert Text In The Last Line Of A File With Sed Command?

Oct 4, 2010

I want to insert the text "DB dept" in the last line of passwd file which looks like this right now

Quote:

newuser:x:717:717::/home/sacharje:/bin/bash

And I want it to be like this:

Quote:

newuser:x:717:717: DB dept:/home/sacharje:/bin/bash

I tried to do that with sed but failed, I'd like to know the proper syntex with sed to achieve this.

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General :: Uploading A Text Into A Webpage From Command Line

Apr 1, 2011

my webpage PHP below. I would like to enter "Hello, in the main inputbox field" below (You are editing: textfile.txt) and click "SAVE" directly from command line.

Sort of : wput_php "hello, in the main inputbox field" click save, and here is it. the text would be uploaded.

PHP Code:

[Code]....

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General :: Insert Text To A File Using Command Line?

Jan 28, 2010

I need to be able to edit a file from the commend line as I intend to script this operation, the file is called menu.lst The original is as below

Code:

titleUbuntu 8.04.3 LTS, kernel 2.6.24-24-generic
root(hd0,0)
kernel/boot/vmlinuz-2.6.24-24-generic root=UUID=b09feb23-5524-4ec4-862f-94700b968f64 ro quiet splash

[code]....

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General :: Selecting A Font When Printing A Text File From The Command Line?

Jul 29, 2011

I don't understand why this is so difficult.In the old days, there was lpforms which allowed some formatting. CUPS did not see fit to implement this into it's lp package.cgi-...-cgi?lpforms+1In the old days, lpr allowed you to select a font in the command line with -1=fontname. CUPS did not see fit to implement this into it's lpr package.htmIn the old days, printers had fonts installed on them that you could access. Modern printers don't seem to have this. So now I still need to be able to select a font when I print certain text files from the command line but it seems this is impossible. I've been working with instances and lpoptions, which allows me to do a lot of other things I need like orientation and margins and even set the font size, but I still cannot choose a font other than the default.

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General :: Command For Appending A Text At The Start Of Every Line And Save It Another File?

Mar 10, 2011

I wish to append a text at the start of every line and save it to another file without changing the original file.know the command

For example:
Orignal.txt
a.txt

[code]...

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Programming :: Set For A Group Of Command Line Arguments?

Oct 11, 2010

i was wondering if someone could help me figure out a script for global variables i'm trying to set for a group of command line arguments:

basically i'm trying to set: if $# = 3 then i want to search for each all string $1 $2 $3

if $# = 4

then i want to search for each all string $1 $2 $3 $4

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General :: Cross-platform / Command Line Utilities To Convert PDF / DOC And DOCX To Text

Jul 28, 2011

I am making a text search engine. I need to first convert binary documents to text. I want to go with cross-platform (we develop both on windows and linux) command line (so that I can get the output via python subprocess). What are the choices for this?

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Fedora :: View A User's Group In The Command Line ?

Mar 23, 2011

I am learning about group and user management with Fedora and can change the user's group using the usermod command but did not know if there was a command to see the group currently associated with the user.

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Ubuntu :: Print To PDF From Command Line

Jul 11, 2011

I am trying to find a way to print PDFs from the command line. I was using "cups-pdf', but I want to be able to specify the output folder from the command line. Is there a way to do this? I guess what I am trying to do is the Gnome "Print to file" option in the terminal so I can easily print off a batch of file to whatever directory I wanted.

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Programming :: Using An Awk Command To Print A Line From A Cvs File?

Mar 4, 2011

I am using an awk command to print a line from a cvs file.the awk command includes an if statement that filter the output-lets say i want to print all the lines that the price field is greater than 30.i have it working when i put the parameters myself.. but when i try to send them with vars it wont work..i am sending the sign of the if statement - can only be: == , < , >it looks like this:

cat file.csv | awk -v sign=">" -v field="2000" '{if($3 sign field) printf "%-12s%-12s%-12s%-12s
",$1,$2,$3,$4}' FS=,

the bold part is the problem , because when i put the sign parameter myself t works great.. i guess its a chars issue but i cant spot it

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Ubuntu :: Use Multiple Cut Command To Print Output On A Line?

Apr 27, 2010

how to use multiple linux cut comman to display on same line ?

e.g ls -il | cut -f6 d:
ls - il cut -f9 -d:

The linux script output is

filename
123

How to use cut to display on same line ?

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CentOS 5 :: Printer In GUI Can Print Fine From The Command Line

Oct 6, 2009

I work at The University of Alabama as a sysadmin on various HPC resources and also provide support for faculty using Unix systems. I've run into one problem that is affecting two different desktop systems running CentOS 5.3.oth of these systems have the latest updates. These machines have standard network-attached printers. One is an HP LaserJet 3250 and the other is a model that is pretty close to that one.Previously these users were able to print from graphical applications such as Firefox, but now when the print dialog is opened on ANY graphical application, it causes a hard freeze on that particular app.Printing from the commandline via `lpr` gives no issues and test pages from the Printer Admin interface also succeed.This problem has me stumped, so I'm looking for any insight as to what could have changed. I do not know what changed between the time when the printers worked graphically and when they stopped, but the users assure that they have changed no settings. The only thing I can suspect is a rogue update since this is affecting separate users on separate machines with separate printers.

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Programming :: Print Images From Command Line At A Specific Size

Jan 7, 2010

I have a requirement to print images (two to be precise) from the command line of a given size and without losing too much quality.

So, I may have two images, a.jpg and b.jpg which may be 4x4" and 6x4" respectively (the sizes may vary). I need to be able to print both these on a single sheet of paper (one under the other) at a given size for each - so a may be 2x2" and b may be 3x2" - the aspect ratio will always be maintained (or as near as possible!)

I am currently doing this a very messy way (because I don't know any other way!!) - basically I am converting the picture to a given size using a set density using convert and then concatenating the two using montage.

Here is part of my script:

Code:

Don't worry too much about the case statement at the end - that is just to be able to select to print either A, B or A and B.

The issue with this is that is doesn't work great if the aspect ratio is not maintained perfectly and also, it loses quite a lot of quality on the print.

I have a very old windows app which I wrote years back in VB (o dear! ) which does the same thing and the quality is fine (I am running it through wine). I want it to be command line though because I want to run it as part of other scripts etc.

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Software :: Allow A Group/user To Execute A Command, Where One Of The Parameters Of The Command Is A Group As Well?

May 3, 2010

Is it possible to allow a group/user to execute a command, where one of the parameters of the command is a group as well? example that does not work as intended:

Code:
Cmnd_alias SU=/bin/su -l %group1 This example works sortof, it treats the "%group1" literally. I know I can list out the "/bin/su -l <eachuser>", but as you can imagine that is impractical. In this example, I want people in group2(not shown for brevity sake) to be able to su to someone in group1

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General :: Insert A Line Into A Text File Using "sed" Command?

Sep 18, 2010

I've been reading tutorials of Linux sed command, but haven't got anything yet. the problem is : I want to insert a line into my DNS database file which has a pattern like below:

<Domain name> 3tabs here <IN> <A> <ip address>

the question is : how to add a line into a file like this using linux sed command? I have problem inserting tabs and the spaces!

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General :: Convert An HTML Email Saved As A Text File To A PDF File From The Command Line?

Aug 23, 2011

I need to be able to convert HTML email messages saved as text files (.eml or .msg) to PDF documents, one PDF per email, retaining formatting and images.

Are there any Linux tools that will allow me to do this from the command line (so it can be scripted)?

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