Programming :: String Editing: Remove Lines Consisting Of A Single Character?
Jul 16, 2010I have a large text file that's formatted sort of like this:
Code:
foo bar
blah
[code]...
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Programming :: Script To Remove Lines In A File With More Than "x" Instances Of Any Character ?
Oct 4, 2010I'm looking for a script (bash, python, perl etc) or even a one liner (sed, awk etc) that can take a set of files and remove any line that has more than "x" instances of any character (case sensitive). I have been doing a lot of searching and can only come up with examples of how to remove blank lines, lines that start with a certain character or lines that contain a certain string. This will be used on a system running a Kubuntu derivative.
As a very poor and basic example, I would like to take files that contain lines like:
Code:
And end up with the files only containing the lines:
Code:
If I tell the script that 2 is the maximun number of times any character can appear in any line.
I know this must be possible, but for the life of me I cannot find even an example that will lead me in the right direction or better yet a piece of code I can use.
General :: Shortcut To Remove First Character Of Multiple Lines In Gedit
Jan 23, 2010I want to be able to remove the first character of a line when I highlight multiple lines in gedit. Example:
%Example is
%Commented Code
%Uncomment using this shortcut
I would then highlight/select these lines, and remove the first character to make it look like this:
Example is
Commented Code
Uncomment using this shortcut
I'm pretty sure there is an actual shortcut for this. If there is another text editor on Linux that it would work in, it would be nice to know how to do it in that editor as well.
Programming :: Using Sed Replace Line Containing Particular String By A Single String?
Oct 16, 2010I have a set of lines as ahown below:
Leon went to school
Leon came back from school..
Leon had dinner...
I have to replace the line containing "dinner" by a single string LUNCH...
General :: Using Sed To Remove Lines Around A Specified String?
Jun 4, 2010I have a data set that takes the form...
0.0 43
12572.9102 80.8521 263.3575 0.0200 12.6358 -86.4942
4.3870e-06 -0.3547
[code]....
Programming :: Get Value In Character String?
Oct 23, 2010i am compiling the following program in linux. it's in c language. after the compilation with gcc when i run the executable file. it asks for input. but when i enter a name. i prints "Segmentation fault" and then terminate the program. can you please help me.
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
[code]....
Server :: Remove Dynamic String Across Multiple Lines And Files?
May 13, 2011My server was hit with an injection script which has placed code across many of my clients files. I need a script that can remove a block of php code that spans multiple lines, multiple directories/files and is dynamic, meaning that part of the code changes. I think using find/sed is what I need but cannot seem to figure out how to get it to work.The following is the script that is being injected everywhere. The catch is that they have generated dynamic code at the start/end of the script. (I have commented the parts that are dynamically changing on EVERY instance).PLEASE NOTE: Directly following this script is the start of a valid php script that I do not want to delete.
<?php
//{{65281980 - DYNAMIC!!
GLOBAL $alreadyxxx;
[code]...
Programming :: Replace The Last Character String?
Jan 19, 2011how to replace last character string. For example
$>export T1=abcde
$>export T2=xyz
how to get result abcdxyz?
Programming :: Remove Lines And Parts Of Lines From Python Strings?
Nov 24, 2009How do you remove parts of strings using python? Such as, if I have something like:
Code:
erme1 sdifskenklsd
erme2 sdfjksliel
[code]....
Programming :: Script To Get Position #s Of First And Last A-Z Character On Certain Lines?
Oct 3, 2010I have a set of files containing DNA or amino acid sequences from various organisms:
Code:
>14432|LGIG|186221
--MISVLAMA-NRITAAEKR
>14432|CAP1|21057
MVRVNVLADALKSI-TAEKR
>14432|HROB|156827
--RMNVLADALXSIC?AEKR
>14432|NVEC|159589
-VRVNVLN-ALNSICNAEX-
[Code]...
Can anyone help me get the position of the first and last non-missing data characters (while allowing missing data characters in the middle of the sequence)? I'm sure it is a simple sed or awk command but I can't figure it out. I think I can produce the output file I want once I have figured those commands out.
My ultimate goal is to write a script that can make composite sequences from two or more non-overlapping sequences (e.g., the two sequences from NEOM). I may also want to merge sequences that partially overlap (e.g., those from TEST) but that would complicate things. Is this a logical first step for such a script or would you do it differently?
Programming :: Convert String Array To Character?
Aug 18, 2010i have problem in java. how to convert string array to character. e.g string a[]={"ab","abc","abd","ag"}; what will be the character array ?
View 3 Replies View RelatedProgramming :: SED Assistance: Add Character In The Middle Of A String?
Oct 20, 2010I have a folder of MP3s, where some have <artist>- <song> and others have <artist> - <song>. I wanted to make all of them say <artist> - <song>
The command that works for me was
for i in *[a-Z]-*; do mv "$i" "`echo $i | sed 's/-/ -/g'`"; done
but if I -hadn't- used ls with my parameters to filter out the valid results, how would I have done this with sed? I got close with:
ls | sed -e 's/(.*)[a-Z]-(.*)/1 - 2/'
but with the above I lose the [a-Z] character that I used to match with (and I need to keep that).
Programming :: Csh Shell Script - String Concatenation - Add A New Line Character?
May 4, 2009Inside a loop i'm populating a string variable. Because csh doesn't have very good support for arrays I thought of doing this. I want to add a new line character to the end of the concatenation each time the loop iterates. Then at the end print this variable out.
I tried " and some resources said it was just a "". Neither work. What am I doing wrong?
Programming :: Perl Only Matching Single-character Regex Patterns?
Jan 20, 2009I'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:
Programming :: Text File Replace Occurrences Of Three Character String ZZZ With Quotation Mark
Mar 30, 2010I want to use SED to do the following: In a text file replace any occurrences of the three character string ZZZ with a quotation mark "and. replace all occurrences of a comma with a semi-colon. It is the S/ / / command which is stumping me on the first issue...inparticular how to get the replace string to be quote.
View 9 Replies View RelatedProgramming :: Split String Into An Array/list Of Lines In C++?
Jun 4, 2010How can i split a string like this,
Code:
This is my first line.
This is my second line.
This is my third line.
into,
Code:
"This is my first line.", "This is my second line.", "This is my third line."
in C++.
i.e. split the code at every new line
Programming :: Sed - Awk - Perl - Merge Lines Unless They Match A Certain String
Apr 15, 2011What is the best way to merge lines, in sed, awk or perl, that occur between certain strings? I'm new to sed scripting and I have been working on this for some time now. I have a large file (sample below) that I need to edit.
What I need looks something like this.
I'm working with a very large file so simply merging all the lines then adding a new line character before ">contig" and after "translated" won't work, at least not with sed.
Programming :: String Concatenation In Perl Result In Two Lines - Not One?
Jan 11, 2010I am new to perl and am having trouble adding some strings together.
My full code is below:
The problem is $NewCommandB is always split into two lines, where the second line contains the "/atlas2/<blah>/<etc>/..." string. Since I am generating a .sh file to execute a lot of similar commands I need the string to all be on one line. Any idea why I get this behaviour and any suggestion on how to tell perl to make $NewCommandB a one line string?
Btw for completeness finalFileList.txt contains just file names one line after another:
Programming :: Script To Delete Aligned Single-character Columns With No Field Separator?
Apr 20, 2010The lines beginning with greater-than symbols are the sequence descriptors and the lines immediately after each descriptor with A-Z characters, dashes, and question marks are the aligned DNA sequences. The sequences are always the same length within a file and never span/wrap across more than one line.I am trying to write a script to remove positions in the sequences that are only represented by a -, X, ?, or N (these represent gaps or missing data). Also, if there is exactly one non-gap/missing character in a position it is also useless (there is nothing to compare it to) so I would like to remove those positions as well.
Position 5 (from the left) was removed because it was all gap/missing characters. Position 9 was removed because only one character was a non-gap/missing character. Position 10 was retained because there were 2 non-gap/missing characters.I'm really not sure where to start here. My first concern is I can't figure out how to tell awk to treat each character in lines not containing a greater-than symbol as a separate field. After that, I'm thinking I should use set up a counter to count the number of lines with gap/missing characters comparing that to the total number of lines not containing greater-than signs?
Programming :: Perl String Question:extract Lines From Somefile?
Jun 19, 2011what's the equivalent code of Perl?sed -i 777,2545!d somefileObviously it extract lines of somefile between that 2 digits .
View 1 Replies View RelatedProgramming :: Retrieve A Single String Or Value From /proc/cpuinfo
Oct 1, 2010I'm trying to retrieve a single string or value from /proc/cpuinfo, but when I try to extract the model (not the model name) the model name comes with it, also it likes to print it twice...
Code:
model="`cat /proc/cpuinfo | grep model | cut -d: -f2 | cut -c1-3`"
echo $model
All i want this to do is spit out the model number once. (I need to pass it to another script)
Programming :: Python - String To Omit The Single Quotes (')?
Mar 18, 2011After I assign a string to a variable, I know that the print function will remove the single quotes around the value, but is there a way to assign a variable without the quotes around the value? for example:
a = open('/usr/lib', 'r+')
b = f.read()
c = x.replace('.xx','yy')
d = ?
c returns the value with quotes around it print c returns the value without the quotes Is there a way to assign a new variable (d) which will equal c without the quotes? I need a new variable which has the quotes omitted because from there the script will take the value of the last variable (which is a path to a file), and tar up that file. It won't recognize the path to the file if the value has quotes around it.
Programming :: How To Remove The Last Character
Jun 27, 2010I have a string like this "/home/test/filename.txt" and i want to delete all character after the last "/". how to do that using sed or awk.
View 5 Replies View RelatedProgramming :: Remove First And Last Character?
Feb 24, 2010which is the simplest way to have first and last character cropped out from a string? Something simpler than
Code:
echo $STRING | cut -b 2- | rev | cut -b 2- | rev
Programming :: Remove The Last Character From Variable
Jun 22, 2010i have the following:
Quote:
echo %host%|sed "$s/.$//"
this would remove the Last character of the value assigned to the %host%. for example if my value is: abcd i get abc. but i am not able to assign the output. for example when i do
Quote:
set k=`echo %host%|sed "$s/.$//"`
after doing echo %k i get no output at the command prompt...!! whereas when i just type:
Quote:
echo abcd|sed "$s/.$//"
at the command prompt i get abc. maybe some other ways to Remove the Last character...?
Programming :: Remove All Lines Containing 'A,,,,,,?
Nov 3, 2010How can I remove all lines which contain A,,,,,, I tried the following sed statements but no luck.
Code:
sed "/A,,,,,,/d file"
sed "/A,,,,,,/d file"
General :: Delete All Lines Containing A String, Plus 4 Lines Below It?
Jan 26, 2010I've come across an unusual requirement for a service in my Ubuntu system.Simply put, I need to find a way to search for all instances of a term in a file, delete lines containing containing that term, and delete four lines below each instance of that term. ither that, or copy the entirety of a file to a new file and skip over all lines containing the term plus four below it.This sounds kinda weird, I know. Without going too far into detail, I either have to change the logfile format for a server I'm running which is a huge pain in the butt, or I can just run a script to edit an HTML report generated from said logs. (Said report is really just for managers to peruse, and I like my log format, so I'm pursuing option 2.)
View 4 Replies View RelatedProgramming :: Remove All Lines Containing Extended Characters
Nov 7, 2010I 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.
View 8 Replies View RelatedProgramming :: Remove Extra New Lines (BASH)
Jul 15, 2010I'm trying to search through some pdf files and I'm doing so by converting them to text files using pdftotext which is fine but I'm trying to get the number of occurrences in a paragraph of different words and it's adding a new line character at what it thinks is the right hand margin. I'm trying to remove all these singe new line characters but keep the doubles and I can't seem to work it out. i.e.
This is some text that has been broken.
Another paragraph.
becomes
This is some text that has been broken.
Another paragraph
Programming :: Remove Specific Lines From File
Jan 21, 2011I'm trying to come up with ideas for a simple way to strip a specific "entry" from a text file.I know tools like sed and perl can remove specific lines from a file but I haven't been able to come up with an elegant way to do my group of lines.In my file, the first "Location" line and the "SVNPath" line should be unique every time... but are they enough to strip out the whole set of the group plus the trailing one line of white space separating each group? Add to this, my file will grow as new entries are added (always appended to the end) but new entries will have the same formatting.
View 9 Replies View Related