General :: Script To Count # Of Chars Per Line - If Line Meets Certain Criteria - And Get Avg #?

Sep 11, 2009

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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General :: Head Adds Chars To End Of Each Line (Red Hat Enterprise)

Apr 5, 2010

I wrote a bash-script that splits each of many .sql-files into two parts by some condition using head utlity. After that I execute all the scripts in sqlplus, and in one or two of them I get an error: SP2-0042: unknown command ")" - rest of line ignored. If I open the file with vi, I can see that in the end of each line there's a "^M", which is treated as a single character. If I delete this character placed before the closing parenthesis, the scripts executes without any errors. In the initial script opened by vi there's no such characters. Is it a problem with the head utility or with something else? Of course, I cannot grep these special chars.

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Programming :: Pad End Of Each Line With Spaces To = 80 Chars?

Apr 14, 2011

I've searched the forums and the google looking for a means to do this and haven't found anything I can use. I have a large file that looks like this:

Code:

18000034161828M850
18000034172676M850
98 093095

[code]...

I need to add spaces at the end of each line to ensure that every line has 80 chars before the carriage return. I was thinking something like this, but it doesn't do the right thing:

Code:

cat filename | sed -e 's/$/(bunch of spaces)/' | cut -c1-80 > filename2

I'm on fedora, so I can use awk, sed, bash, ksh, etc.

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General :: Showing The Line Count Of A Specific File

Mar 30, 2011

Is this the correct way to show the line count of a specific file?

cat file | grep * -c

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General :: Grep Command - Show The Files But Not The Line Count

Oct 31, 2010

This has to also show the line count. I can get it to show the files but not the line count. What is the single command used to identify only the matching count of all lines within files under the /etc directory that contain the word ‚ÄěHOST? List only the files with matches and suppress any error messages.

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General :: Splitting Text File Into Several Parts By Line Count

Sep 21, 2009

I have a utility that works with files. The utility is crashing at after about 120 files. The input to the utility is a file containing a filelist. I want to cut the file with the file names in it to seperate files containing about one hundred or so. My thought was to determine the number of lines/100 and then use head and delete to create temporary files to run the utility multiple times to prevent the crash. When I tried to create a variable using the wc -l command the output gives me the number of total lines but it also includes the filename of the input file. (873 Filename.txt) I can not figure out how to remove the Filename.txt from the variable.

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General :: Command Line - Count Number Of Folders In A Drive Using System?

Apr 9, 2010

I need to organise an external HDD such that there is no more than 500 folders on it.

Ubuntu's "Properties" pane shows only the file count, not the folder count.

Is there a simple CLI line that will tell me the number of subdirectories?

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General :: Identify File Types - Command Line Arguments - And Count - How Many Of Them Are Regular Files

Feb 20, 2010

Write a script that will take a list of filenames as arguments and output a count of how many of them are regular files, and how many of them are scripts (if the file is executable, it will be assumed to be a script file)

Counts always come back as 0

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Programming :: Count The Number Of Slashes In Each Line?

Jan 18, 2010

I have a file with lines that look like this:

Dev/7_Texas2004/4_Caves/page.htm
Dev/7_Texas2004/5_SanMarcos/page.htm
Dev/7_Texas2004/6_Austin/page.htm

And I'm trying to count the number of slashes in each line. I figured (with my limited knowledge of bash) that the best thing to use would be sed. So I ran this to print "not /": sed '!s////g' file # and eventually adding " | wc -m" to it. and I got the same result as if I ran cat, no modification at all:

[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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Programming :: Access A File Line By Line, And Check The Length Of Each Line.

Feb 13, 2011

I want to access a file, and check the length of every line.After, i want to check and replace all lines with length over 10 characters, with a message.Does anyone have a clue on that?

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OpenSUSE :: Count Lines In Multiple Text Files From Command Line?

Apr 27, 2010

I want to (from the command line) be able to counte lines in a bunch of files of a specific type in a folder and all its sub-folders. How would I do this?

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Programming :: Compare Two Files Line By Line And Print The Line Which Is Same?

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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Programming :: Insert Line Using Sed Or Awk At Line Using Line Number As Variable

Jul 25, 2011

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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General :: Create Cron Tab When DSL Line Down Set Automatically Restart The Network Service While DSL Line Up?

Oct 7, 2010

How to create cron tab when DSL line down set automatically restart the network service while DSL line up?

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General :: Getting The Line Of String From Previous Pipe Output By Line Number?

Feb 8, 2010

After running the following command, I get:

[root@yukiko /]# find / -iname .bashrc
/home/clamav/.bashrc
/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:

[root@yukiko /]# find / -iname .bashrc | getline(2)
/home/vpopmail/.bashrc

Is there such a command on CentOS?

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General :: Scripting - Feed An Input File Into An If Statement Line-by-line

Dec 23, 2009

I am trying to write a script that takes an input file ($FileName) and an intermediate file ($FileName.info) and removes lines from $FileName if the value in $2 of $FileName.info is <75.

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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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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General :: Command Line Way To View A Line Of A File With Context?

Feb 24, 2011

I'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]....

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General :: Printing Command Line History Without Line Numbers?

Aug 22, 2011

How can I print Linux command line history without including the line numbers? I want to send it all to a text file like this:history >> history.txt

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General :: Sort By Line Size (number Of Characters In A Line)?

Jan 8, 2010

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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General :: Appending To The Current Line In A File Instead Of Creating A New Line?

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:

hello my name is Bob

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General :: Match And Combine 2 Text Files Line By Line

Mar 21, 2011

This solution works but is slow with large files. I am looking for a faster solution.

The 2 files contain filenames, one of them has associated data I want to append to the other file's matching filenames

file1:

file2:

I append file2 by matching the unique_filenames and appending them with the tag data and some formatting

appended file2:


Here is the SLOW code

while read inputline.

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General :: Sed To Display The Pattern String - The Line Above It And The First Line Of That Para

Mar 30, 2011

I need to grep for a particular string and if found need to display the line containing that string, the line above that and also the first line of that paragraph.

Can this be done via sed.

Eg, My Paragraphs

OA connectA

Enclosure:

Interconnect Module #6 Status:

Here, if I grep for Critical, it should display the following

Similarly if I grep for Degraded, it should display

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General :: Script Which Read Line By Line /passwd Using While?

May 13, 2010

I have to do several scripts and I have no idea of how to do this one: Make a script that read line by line the passwd file and prints in console.Hope you understand couse my english isso bad as you can see.Our teacher told us something like this:#!/bin/bashwhile read line doecho $lineadone < dispositiveexit

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General :: Grep Lines Containing A Certain String PLUS The Line Following That Line?

Sep 1, 2009

I have a dataset (see example below) that I would like to go through and copy all lines containing a certain string ("LGIG") plus the line immediately following that line to a new file. I have no problem grepping lines containing the string LGIG but I'm lost how to translate that to line number and shift up one line number for each instance of that string.

Example input file:

[code].....

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General :: Replace Line With Another Line In Shell Script?

Feb 26, 2010

I have the file abc.txt

cat abc.txt This is a test file Nothing is new in this world

I want to replace "This is a test file" to "Text is replaced"

Code:
FindString='This is a test file'
ReplaceString='Text is replaced'
Findarray=(`echo $FindString | tr ' ' ' '`)

[Code]....

But this is not effective. how to replace entire line either using sed or awk or any other utility.

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General :: How To Delete A Line At Specific Line Number

Jun 15, 2010

I m writing a script to delete a line at particular location.

But i m unable to use variable for specifying line number.

For example.

Code:

works fine and deletes 7th line from my file

But

Code:

gives following error.

Code:

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General :: Xterm - Go Onto Next Line When End Of Current Line Is Reached?

Jan 7, 2010

I am using xterm and sometimes when typing long commands into a small window, the command extends beyond the end of the line. On my old uni setup, when this happens, the cursor moves to the line below and you can see what text you have typed above however on my slack 13 setup, it overwrites the current line so you cannot see what you have typed! How can I set xterm to move onto the next line instead of overtyping?

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General :: Compare Two Files Line By Line?

Mar 24, 2010

I have two files (not sorted) and need to compare line by line (i.e. first line of file1 to be compared to all the lines of file2 and so as for the rest of file1). Output will be an array of length of file2. Any suggestion in BASH other than a grep inside two read line loops ( which is time consuming for files ~1000s of lines).

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