Programming :: Remove Special Characters From String

Jan 30, 2011

I am reading strings from a file using readline() function,the file contains some strings which has only special characters, I need to avoid the strings which has only special characters, the special characters are not similar. How to do it in python.??

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Programming :: Remove All Alphabetic Characters At Beginning Of String

Jul 26, 2010

I am working with a Tcl script and have some strings in the following format (RE):

There are some leading letters, combinations of capital and lowercase. Then six digits, followed by a hyphen, then one more digit. I would like to remove all of the leading alphabetic characters from the string. The resulting string would then be in this format: [0-9]{6}-[0-9]. In other words, six numeric digits, a hyphen, then one more digit.

I have tried:
set newstr [string trimleft $origstr alpha]
But that only removes the first alphabetic character, not all of them.

I couldn't get anything with regsub to work correctly, but I am somewhat of a noob with RE's in general and regsub in particular. There are usually 5 leading letters at the beginning of these strings, and I could in most cases get away with using string replace and constant indices to extract the substring. However, my preference is for this to be robust enough to handle all cases with 1 through n leading alphabetic characters.

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General :: Using Sed To Replace String With Special Characters In XML File?

Apr 29, 2011

I am having difficulty getting sed to replace a string of text in an XML file, despite the fact that I have no trouble using grep to find that same string. Since the new string and old string to be replaced contain a lot of special characters, I thought it best to store them in variables as opposed to using a slew of backslashes:

OLD_STRING='<property name="webServiceHost">${jboss.bind.address}</property>'
NEW_STRING='<!--<property name="webServiceHost">${jboss.bind.address}</property>-->'


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General :: Search And Replace String Having Multiple Special Characters

Aug 26, 2009

Below is extract of my file:

What I need is to replace "--destination-path=" with "--destination-path=/home/dest"

i.e. desired output is ----destination-path=/home/dest

I could achieve it with below command

$cat outgoing-xfer|grep destination-path|perl -pi -e "s/destination-path=/destination-path=/home/dest/g"

But the problem is that in this case i just wanted to append "/home/dest" for which I could easily escape "/" with just two "", but I wonder if i have a long path like "/a/b/c/d/e/f/g/h/i/j" I will have to escape so many /. Is there any other way by which I can avoid escaping forward slash.

I tried following:

But receiving follo error

Bareword found where operator expected at -e line 1, near "s/destination-path=/'destination-path=/home"
syntax error at -e line 1, near "s/destination-path=/'destination-path=/home"
Bad name after dest' at -e line 1. tried with enclosing in double quotes as well but in vain

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Programming :: Change A Line In A File Code - Sed Special Characters Bash Script

Jan 26, 2011

I'm having issue when trying to change a line in a file


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Programming :: Split A String By Every Nth Characters?

Jan 17, 2011

splitting a string by every nth characters. I'm using Python 2.7.1 because I'm using older libraries, if that matters.

For example, if this is my input:


Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed ac elit nibh, vitae venenatis ligula. Vestibulum a varius turpis.

Splitting it by every 10th character should produce this list:


[ "Lorem ipsu", "m dolor si", "t amet, co", "nsectetur ", "adipiscing", " elit. Sed", " ac elit n", "ibh, vitae", " venenatis", " ligula. V", "estibulum ", "a varius t", "urpis." ]

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Programming :: How To Insert Characters Into String In Shellscripts

Nov 15, 2010

My problem is to insert one sign like space or ':' into a line or string.The goal is to get a demiliter for `cut`.I tried to do it with `tr A-Z "'A '-'Z '" and such but without success.I guess a while read loop could do it but I don't know howto use it with ` expr length $STR`

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Programming :: Count The Number Of Occurrence Characters In A String ?

Jan 26, 2011

How do I count the number of occurrence characters in a string in an efficeint way ?

How do I reverse the words in a string with out using temp variables if possible . (if not possible use temp variables ?

Why do I specify dependedcies for header files in the Makefile ?

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Programming :: Use Sed To Find String Pattern And Delete Subsequent Characters?

May 3, 2010

I have a file with a number of strings like the ones below


I'm trying to delete everything after #** so that


tried sed 's/#..*//g' but as you all will know it returns string1, string2 etc.

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Programming :: Java Regex - Use Regular Expressions Find Out What The First Two Characters Of The String Are

Feb 2, 2011

What I am doing is reading the text from a text document and storing all of the text inside of a ArrayList. I then set one of the values of the Arraylist as a string. I want to use regular expressions find out what the first two characters of the String are. if first two characters = "//" then function(); I only care about the first two characters though. If you need any more information, just ask.

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Programming :: Special Expression `-l STRING' For "test" Command?

Apr 21, 2010

I have searched and searched in regards to this documented 'special expression '-l STRING' for the 'test' command, and to no avail, have I found out why it does not work on my system.

The example always given is:
test -l abc -gt 1 && echo yes
And the returned result is:
bash: test: -l: unary operator expected
The documention is usually as follows:
Numeric tests

Numeric relationals. The arguments must be entirely numeric (possibly negative), or the special expression `-l STRING', which evaluates to the length of STRING. Then examples are given, including the one I provided above. Does anyone else have this issue of getting an error when trying this special expression of 'l STRING' ???

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Programming :: Remove Characters From Within Variable

Feb 20, 2011

I am doing a mysql query with a bash shell script like:
mysql translator -u root --password=******** -e "SELECT word FROM tagalog ORDER BY RAND() LIMIT 1" | while read line; do
echo $line

So when I echo the value of $line I get:
magandang umaga
"word" is the name of the row in the table and maganda umaga is a randomly selected choice from the row. Is there a way i can remove the name of the row from the variable $line. With a result that will allow me to echo $line and output only the randomly selected entry in from the row e.g. magandang umaga

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Programming :: Using Sed To Remove All But The Last 17 Characters On A Line?

Jun 3, 2010

I'm having a bit of a headbanger trying to work this one out. I'm trying to remove all of the characters on a line apart from the last 17. For example, I need to change this:




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Programming :: Remove All Lines Containing Extended Characters

Nov 7, 2010

I am using 'sed -e /foo/d' to match lines which I want to delete from a file. I discovered I have some lines which contain random (extended?) characters like 'ủ' which I would also like to delete. The lines in the file should only contain alpha numeric characters.

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Programming :: Remove Characters From Grep Output?

Apr 14, 2010

How can I remove characters from grep output using sed? code...

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Programming :: Remove Odd Characters From CSV Files Using A Script?

Apr 27, 2010

I hope you can help. I have a collection of spreadsheets with data that needs to be imported in to SQL. The data has been manually entered although there are portions where data has been copied and pasted from the web.

When converting these sheets to a CSV I get strange characters where it looks as though data has been copied and pasted. Is it possible to write a script (AWK?) to pull out these characters?

I guess the script will need to keep alpha characters, spaces, numerics and commas but nothing else. How easy is this to do?

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Ubuntu :: KDE 4.4 - Compose Key And Special Characters

Feb 15, 2010

I am trying to type German Umlaut letters on an English keyboard using kde 4.4. For some reason I seem unable to figure out how to do that (I have just recently switched to kde, was using gnome before). I have looked through various threads and the kubuntu wiki [URL], but can't get the compose key to work. In gnome I used to type "AltGr" plus "[" followed by a vowel and thus get my Umlaut - before I fiddled with the system settings this worked in kde, but only in firefox & Open Office (I assume they are gtk apps).

Since it did not work in Kmail, I went to the system settings, set up a ComposeKey (AltGr, but also tried rightWin), but it doesn't change anything for the kde applications. It only means that the old key-combination now stopped working in firefox and OO. In the system setting of kde 4.4 I can't see the options to enable xkb-options, but I assume the advanced options of the keyboard layout are xkb-options of previous kde releases. I unticked the box 'reset old options', but nothing changed. I type a lot of German text, so using a character map is not an option.

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General :: $@ >> File With Special Characters?

May 21, 2010

Simple logging script that allows user to enter quick notes and questions, but I can not get it to pass punctuation '?. no matter what I type after 'n' i need that to be inserted at the end of the working project note file.Any help and working examples would be appreciated, but please also direct me to the proper reading material so I can learn something - not looking for someone to just do it for me.usage:

bob@smith:~/notes$ n bob's script sucks?


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General :: Write Special Characters In UTF-8?

May 25, 2011

I want to be able to enter special characters into OOWriter and gedit. Ubuntu supports UTF-8, and I've no idea how to use it.

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General :: Special Characters Don't Appear In GNOME

Jan 21, 2011

I am trying to make specifically Norwegian characters appear properly. Right now they look like this:


Characters like turns the same. This is a font that I downloaded called PT Sans. The letters I want are included, they just don't appear right in the GNOME environment, it seems. They work just fine in other applications, such as OOo Writer. I'm using Ubuntu 10.04.

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General :: Using Find And Tar With Files With Special Characters In The Name?

Jun 1, 2010

I want to archive all .ctl files in a folder, recursively.tar -cf ctlfiles.tar `find /home/db -name "*.ctl" -print`The error message :tar: Removing leading `/' from member namestar: /home/db/dunn/j: Cannot stat: No such file or directorytar: 74.ctl: Cannot stat:No such file or directoryI have these files: /home/db/dunn/j 74.ctl and j 75. Notice the extra space. What if the files have other special characters? How do I archive these files recursively?

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Ubuntu One :: Special Characters In One Tomboy Web View?

Apr 15, 2010

Just a small issue:I have a note in Tomboy called "Today's tasks".When I access the synchronised note on Ubuntu One, in the tabbed view it is called:"Today's tasks"Perhaps someone working on this would like to investigate it.

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Ubuntu :: Replace Strings Containing Special Characters With Sed?

Jan 4, 2011

here's my newbie question - I want to change the following string in text files

with the following string using sed:


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General :: Write Special Characters (like |, ~, Alt, +, 124 In Windows)?

Apr 15, 2009

I've always been connecting to linux machine from windows computer, using putty.

Now the situation changed and I have a question:

How the hell can I write special characters (like | ~ Alt + 124 in Windows)?

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General :: KDE - File Names With Special Characters ?

Feb 20, 2010

I am running gentoo openbox(rox file manager and desktop) I installed Digikam and Amarok. But I have problems with files which include special character in their names(such as �,�, �,ğ... ) The files are shown with strange and weird characters in the file dialogs of Digikam and Amarok.

I don't have this problem in other applications. I can create files with special character included. I think some settings do not agree with KDE4. How can I solve this problem? Does anyone have an idea? I also installed KDE systemsettings program but could not find a relevant config option for character encoding.

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General :: Special Characters In PDF Creation With PHP On Suse?

Apr 13, 2011

We are creating PDFs from different sources using PHP, Zend_PDF class and Zend server (based on apache2). Developping on windows the PDFs are OK. If we deploy the application on testing server running SuseLinux the special characters ( ) don't show. We use 1 of the standard fonts, HELVETICA and have tested without success COURIER.

The system

Do you have an idea what to do or try?

OK - it turned out to be a coding question. I had thought that some system variable might cause the problem but we simply had to clean the input data and got it working.

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General :: GREP - Search Special Characters

Feb 10, 2010

I need to search for the following pattern with GREP in a text file:

So I tried already:

But none of those works...I think probably because GREP doens't like the special character > in the middle of the serach pattern.

At the end I just need to now if GREP found the pattern in the file or not, so it should give me a 0 or a 1 back, once I check the value of the variable "?" after using the grep command.

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Software :: Using Sed To Replace Special Characters In A File?

Mar 24, 2011

I have a file with special characters that need to be replaced. I've been working on this for a day and have run out of time.

Example: FILE='/var/tmp/S0000000.LOG.March-24-2011:10:51.tar'

Need to replace the ' with a " on all lines in the file.

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Programming :: Perl - Remove A Part Of String Unit1/U800/o

Apr 13, 2011

In a file,

I need to remove a part of string: /o



the string can be

here I need to remove /d2

So, I need to remove everything after when I get last /

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Ubuntu :: NTFS USB Drves Mount With Special Characters?

Oct 24, 2010

I'm running mythbuntu 0.21 on a hardy environment. I had a thread under mythbuntu but i think this was the wrong forum. So here it is again

Currently i hesitate to upgrade to lucid because i fear problems coming up which i do not have the time to solve.
The machine works generally fine so why upgrade to lucid?


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