I'm trying to find a script that will return me the largest number of repeating characters. Say, I have the following line in a text file: 12345AAAAA6789AAA
I want it to return 5, because "A" is repeated 5 times in this line (more than 3 at the end).
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 ?
I asked this question yesterday with Linux, but I realized I need to get it working in both Linux and OS X. Link to earlier question: Get folder with largest number at the end of the name in Linux. I have some folders r1, r2, r3, etc. and I want to get the name of the folder with the largest number at the end. How do I get the name? The ls -v solution looks promising, but I want to exclude all folders that don't follow the pattern r[0-9]*
View 3 Replies View RelatedI have a file that contains a number of lines of DNA sequences like the single (yet very long) line below. There are far too many trailing and ending dashes then is needed in the file (however some are needed so I cant just delete all leading and trailing dashes).Therefore, I want to count the number of dashes leading up to the first base (either an A,C,T, or G) for every line in the file. I then want remove the smallest number of leading and trailing dashes among all the lines from each line in the file.So basically lets say the smallest number of trailing dashes between all lines in the file is 300 and the smallest number of leading dashes between all lines in the file is 500 dashes. I then want to subtract 500 dashes from the beginning of every line and 300 dashes from the end of every line. I hope this explanation is clear.
Code:
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[code]....
Anybody know and command to count any characters in file? I would like to know the total number of character " (quote) in file. My idea is to check if in a script the total number of this character is pair.
View 4 Replies View RelatedI recently found myself in possession of a large file (a few million lines in length) of short strings and would like to count the number of lines that are unique to the file. I thought this would be an easy process, but while working on the problem, I encountered the following. Can anyone explain this weird result to me?
Code:
alaric@alaric-laptop:~/Documents/Programming$ grep '^string$' file.txt | uniq | wc -l
1
[code]....
i try to make a script in bash that u choose a number for example 501 and another number like 1 and find how much the 1 number repeat in all numbers from 1 to 501 for example 11 -->1 repeat 2 times.in 1 to 501 the number 1 repeat 200 times.
View 4 Replies View RelatedI 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]...
I want to count the lines of all files in this directory and all its subdirectories, but exclude directories "public", "modules", and "templates".
View 2 Replies View RelatedI am using grub of version 2, and current resolution vga=795 (probably). X runs at 1680x1050. So what I would like to know is, how can I count the right VGA parameter number for grub, to use another resolution?
View 11 Replies View RelatedI am a noob and I am trying to display a count of the number of subdirectories in a directory. I have been able to use find -type d to list directories and subdirs but I want a numerical value of dirs and subdirs. I know ls -l gives a count but when I try ls -l -d all it shows is "." I also have tried a combination with the -R option but nothing seems to be working for me.Please forgive my ignorance but I am working on a script for class and this is the first step.
View 3 Replies View RelatedI need to create a script to count the number of lines from a text file . The output must be put on another text file (no_lines.txt) and in this file i need to generate from the script this output :"File $FILE has $NO_LINES lines ".
View 3 Replies View RelatedI have the standard problem of trying to count a large number of files in a directory (>100k)
I have tried: ls ~/user/images/* -l | wc -l and find ~/user/images/* -maxdepth 1 -type f | wc -l
In both cases, I get the argument list too long error message.
I have tried using xargs but I can't seem to get it to work right.
The command
returns a valid answer but it includes all the subdirectories in the file count.
I'm running a find. -name pattern to find some files, and I'd like to elegantly get the total number of lines in these files. How can I achieve that?
View 4 Replies View RelatedI'm the POC for all my families Linux computers. Is it possible to get statistics on which programs are accessed, how frequently, for how long and by which user?
When it comes time to upgrade it would be useful so I know which programs to concentrate my testing. I usually just e-mail and ask but every time people forget to send me the programs they actually use.
I am trying to get the count of number of CD-ROMs attached with my Linux system using a bash shell script. I have decided to use the following method for it:
Code:
debian:~# cat /proc/sys/dev/cdrom/info | grep "drive name:"
drive name: sr0 hdb
So basically I know that there are two CD-ROMs attached to the system. Now there can be three also like this:
Code:
debian:~# cat /proc/sys/dev/cdrom/info | grep "drive name:"
drive name: sr0 sr1 hdb
All I want to do is in my shell script to get the count of the devices in a variable using the above command.
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?
i need to count the number of files and put the output into a variable. i used wc -l filename but i couldnt find an option to put the output to variable. example if the number o line is 5, i need the output of echo $x is 5.
View 3 Replies View RelatedI would like to parse an input file in which there are two columns per each row. We want to see how many lines are duplicated where we define duplicate to be having the same second field and different first field. For instance if the input file looks like the following:
79874 13131
79873 12309
79820 13131
[code]...
I need to write shell script which can take number of files and count total rows from all CSVs and display total number of rows counted in all files. Is there any possibility of doing that using shell script and if yes then how.
View 4 Replies View Related# echo "foobar" > /tmp/word
# cat /tmp/word | wc -m
7
I want to print the number of characters in the file. Why does it output 7? Am I missing something obvious?
manpage:
-m, --chars
print the character counts
View the entire contents of the file / etc / passwd, showing first 10 lines of file / etc / group, 10 displayed the last line of the file / etc / group. And
- The total number of lines and characters in file pwd and grp
Probably an easy question but my googlefu is weak. How do I change the number of characters per line for konsole?
View 6 Replies View RelatedIs the maximum number of letters a database table column can contain 255?and is it a bad idea to build a table with about 15 columns?
View 1 Replies View RelatedI'm attempting to search through a rather large assortment of html files created in Word using 'save as html'. what I'm trying to do is find and delete these tags (they're causing browsers to display black diamonds with white question marks):
<span style='mso-spacerun:yes'> </span> Tags contain from 1 to 4 spaces between opening and closing. I get positive results from this:
grep <span style='mso-spacerun:yes'> filename.html but once I attempt to tell it to match any number of characters up until the next '>' symbol, it tells me I'm using an invalid regex: grep <span style='mso-spacerun:yes'>[^>]+> filename.html
I've been nose-deep in regex tutorials for the past day or so, and I'm still not understanding why this doesn't work. If I put the pattern (without backslashes) into a separate file and use `grep -f patternfile filename.html`, I get no error but no matches either. So far as I can figure, the above regex boils down to:
Match the string "<span style='mso-spacerun:yes'>", followed by any number of characters that are not a ">", followed by a ">". If someone could tell me where I'm going wrong with this,
My Linux server which is running my company website have been hacked. Today I saw a number of clients (customers) with some fun characters entries on my database. Access denial on really clients. Please assist, am running Linux Ubuntu 9 and I dont know where to start troubleshooting this. let me confession that I am still on the learning curve on Linux
View 8 Replies View RelatedI have the following perl/DBI script:
Quote:
#!/usr/bin/perl
use DBI;
my ($db, $user, $pw) = ('dbname', '****', '***********');
my $dbh = DBI->connect("DBI:mysql:$db",$user,$pw) or die "Cannot connect to $db: $DBI::errstr
[code].....
The error message is
[Wed Feb 24 13:03:27 2010] myscript.cgi: DBD::mysql::st execute failed: Column count doesn't match value count at row 1 at myscript.cgi. [Wed Feb 24 13:03:27 2010] myscript.cgi: DBI::db=HASH(0x8a30c60)->errstr
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"?
I have just tried to install Ubuntu 10.10 and cannot find the facility to'install into the largest free space on the drive'Am I searching in vain? Is it somewhere I have missed or is it in a different form?
View 9 Replies View RelatedAfter a terrible problem I had with x-server, I decided to opt for a clean install. So, naturally I poped in the 10.10 LiveCD (from Canonical), deleted the Ubuntu Partiton (ext4) and swap, and entered the installer. I have a 40gb Vista partition, 90gb media partition, and 20gb unallocated free space. Once I get to allocate drive space in the installation, I get three options - Install alongside other operating systems, erase and use the entire disk, or specify partitions manually. If I click install alongside other operation systems, it tries to take space away from my media partition to install ubuntu. I'm not too advanced with Ubuntu, so I don't think I'm going to specify my own. I don't know how much to give swap etc, etc, etc.What ever happened to use the largest amount of continuous free space? I have 20gb free I would love ubuntu to use.
View 2 Replies View Related