Ubuntu :: Extract The 7th Line Below C-FM And Every Third Line After That?

Feb 1, 2011

I need to extract the 7th line below C-FM and every third line after that. How can I do it? I've tried using grep but I get all the lines in between. An example of the text I am working with is shown below.

C-FM RADIAL POINT-WISE DATA
(P,K-INF,BU)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

[code]....

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Programming :: Copy And Replacing Specific Line From File1 To File2 Line By Line

Mar 22, 2011

I have two files, file1.traj and file2.traj. Both these files contain identical data and the data are arranged in same format in them. The first line of both files is a comment.

At line 7843 of both files there is a cartesian coordinate X, Y and Z ( three digits ). And at line 15685 there is another three digits. The number of lines in between two cartesian coordinates are 7841. And there are few hundreds of thousands of lines in a file.

What I need to do is copy the X Y Z coordinate (three digits) from file1.traj at line 7843 and paste into file2.traj at the same line number as in file1.traj. The next line will be 15685 from file1.traj and replace at line 15685 at file2.traj. And I dont want other lines (data) in file2.traj get altered. This sequence shall be going on until the end of the file. Means copy and substitude the selected lines from file1.traj into file2.traj.

I tried to use paste command but I cant do for specified line alone.

Here i showed the data format in the file. I used the line number for clarity purpose.

Code:

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May 30, 2011

I am trying to write a program in C which compares two files and prints the line that is equal.

Here file1.txt has

and file2.txt has

Note: file2.txt consist of only a single string where as file2.txt has multiple lines. Actually im comparing two files with md5sum values.

Here is the code but it compares only first line of files..but it should compare the whole file1..and sorry iam a beginner in C can any1 sujest some modification to this code so that..it can compare file2 with entire file1

Quote:

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I want to insert a line at a particular line number using sed or awk. where line number is not fixed and is in form of variable.

I want to use variable in sed or awk command.I tried something like below, but no luck.

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Aug 24, 2010

I'm trying to figure this error message out. This little script is supposed to tweet my laptop's IP address, as a cron job, I'm hopeful that it would do so even if it's stolen. This is a variant of one that works, but this doesn't, and I can't see a difference in the curl line of either one.

Code:
#!/bin/bash
user="xxxxxx@xxxxxxxxx"
pass="xxxxxxxxxxx"
wget [URL]
TWEET=`sed -n 1p index.html`
curl --basic --user "$user:$pass" --data-ascii "status=$TWEET" "[URL]"
rm -f index.html
exit
This is the error message.

Code:
curl: (6) Could not resolve host: status=66.183.103.67; Cannot allocate memory
{"request":"/statuses/update.json","error":"Client must provide a 'status' parameter with a value."}
Why does curl think the status is the URL?

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I have a text file of n-number of tab-delimited lines ("INPUT") which I would like to parse line-by-line to a text output file depending on the SampleID of the line. These lines contain a unique SampleID and each subject has several lines of data.

[code]....

I also have a text file of relevant SampleID ("INPUT2"). The basic idea is that I read a line from INPUT, split the tab-delimited line, extract the SampleID from the split line, compare the SampleID of this line to my list of relevant SampleIDs. If there is a match, then print the line from INPUT to OUTPUT, then move on to the next line of INPUT. Alternatively, if there is no match, then move on to the next line in INPUT. I tried to script this (extreme newbie at perl right now) and failed miserably, but here is what I have at the moment:

[code]...

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May 25, 2010

im trying to find a way to extract the phrase between the words Connection and is (ie the underlined words below). Can we use awk to do this? How? Is it the best command to use?

Code:

[06:25:00][i] Connection at Plant A is live
[06:25:00][i] Connection at Building_C is not live
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Oct 26, 2010

I need to write a script called '~/get_birthrate' which when invoked with a two letter country abbreviation(i.e, au,ch,ni), extracts the appropriate line which contains the information about the country's birth rate from the [URL] (where "ca.html" should be replaced with the appropriate two letter abbreviation). The output should look like:

$ get_birthrate au
8.69 births/1,000 population (2007 est.)
$ get_birthrate ch
13.45 births/1,000 population (2007 est.)
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I've never programed shell scripting.

Code goes like so:

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How can I list the following with grep. I want to extract 2 lines fron a text file The fixed known part if it exists will static text and the text line after it will change.

A sample file
.
.
textline1

[code]....

If the fixed part does Not exist how can I return error code 1

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like this;

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Second Hello world // "S" starts right under first line's "H"

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After running the following command, I get:

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/home/vpopmail/.bashrc
/etc/skel/.bashrc
/root/.bashrc

But I would like to have a command that prints a specific line by supplying the command with the line number, for example:

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Is there such a command on CentOS?

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I have several files with many lines something like this:

I'm trying to write a script that will count the number of characters per line that doesn't contain a ">" symbol and give me an average of those values. I have most of the script together but I can't figure out how to connect some of the steps.

Code:

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I can't figure out how to feed only one line of the .info file to the if statement at a time so that it will perceive it as an integer instead of a list.

The error I am getting now is ./script.sh: line 6: [: : integer expression expected

Sample input $FileName

Code:

Code:

Code:

Script so far:

Code:

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I wish to add information to one of my files based on matching IDs,

Here is an example

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(the ID is the 2 colunm)

And the output i wish to be

OUTPUT:

So as you can see the ones that do not match are still present, and the ones that do match just have the extra information from file2.txt added to them.

I thought about using join but that only seems to join the ones that match displays thoes only. i would like all the information in the output file.

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I currently have 3 files with floating point data that I wish to have in a single file with the format:

Code:

F1 F1 F3 Output
a1 b1 c1 a1 b1 c1
a2 b2 c2 a2 b2 c2
a3 b3 c3 a3 b3 c3
a4 b4 c4 a4 b4 c4

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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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Oct 18, 2010

I have two txt files containing x and y coordinates: xcoord.txt & ycoord.txt. I need to open them; read them line by line to get each coordinate; then each time I need to update Xs and Ys parameters inside another file called "dc.in" with the grabbed values.

Finally each time I need to run two exe files ( dc_2002 and st_vac) and produce corresponding output for each Xs and Ys ( dc.in is an input file for this exe files)

I have written the following code but it does not work:

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Apr 1, 2009

Was wondering if any perl guru's could help me with a quick log file adjustment. I have a text file that looks like so (tabs and newlines are revealed so you can see what separates the data):

There are maybe 100 lines of text in this file at any given time. I need to delete all duplicate lines only looking at the first bit of text prior to the first tab. It doesn't matter which one gets deleted as long as there are no two lines that begin with that same text at the beginning before the first tab. So in this example, either the fist line "1234" or the last line "1234" would need to be deleted. I already have code in my script that opens the files - I just need the code to read the text into an array and the part that would find matches based on the above criteria, and make the deletions.

If it would be easier, I can even do a system call and use SED (v4.1.5) and/or AWK (3.1.5) instead.

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Feb 24, 2011

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$ (something) -l 154 stuff.py
150: def foo(bar):
151: """

[code]....

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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"?

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Apr 1, 2011

I am combining data from a couple different input files and creating an output file in a specific format. I notice that if I use the >> operator, information gets appended to a new line in my output file. This is useful, but if I'd like to append onto the CURRENT line, is there an easy way to do this? I've been googling around and see lots of complicated answers, nothing that suggests to me an easy way to do this. For example, if my output file looks like this:

b1a:] cat test
hello my name is
b1a:]

and I'd simply like to append "Bob", how can I do it? If I use

b1a:] echo Bob >> test
b1a:] cat test
b1a:] hello my name is
Bob
b1a:]

So what I would prefer is some command that would create the result:

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