I have a string of tokens separated by space (e.g. str="abc pqr xyz").I want to tokenize thistring and fill it up in an array in a shell scriptrr[0]-->"abc",arr[1]-->"pqr"....). How can I do that?
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copy string a to string b and change string b with toupper() and count the chars
View 3 Replies View RelatedI want to replace a string of directory path in a string to empty:
Code:
But this doesnt seem to give me the desired thing:
Code:
This gives the desired outcome, but its specific, i need a variable in the sed not a string. And if I replace STRING="/mnt/sda1/record/$dd/" then I cant use it for something else, cause its has all the weird backslashes now.
i have a file name using the following pattern:
PREFIX: AR
SOURCE: LEGACY
DATETIME: YYYYMMDD_HH24MISS
SUFFIX: .txt
sample filename:AR_LEGACY_20101104_105500.txti want to extract the source which is LEGACY in this case. how do i do this using shell?
i use this script to get the time and date of back and fourth transactions for a particular execution id. I use a substr command on the 5th column to to cut the milli seconds off the time value. - otherwise the times would look like 08:30:04.235
grep <executionID> <auditfile> | awk '{ print $1, $2, $3, $4, substr($5,1,8}
FIX -> Mon 3/1/2010 08:30:04
FIX <- Mon 3/1/2010 08:32:36
FIX <- Mon 3/1/2010 08:35:08
[code].....
anyhow - i append two sed commands to further clarify the direction of the message.
awk '{ print $1, $2, $3, $4, substr($5,1,8} | sed -e 's/->/ ->IN/g' | sed -e 's/<-/<-OUT/g'
FIX -> IN Mon 3/1/2010 08:30:04
FIX <- OUT Mon 3/1/2010 08:32:36
[code]....
I tried using an awk gsub () command within the string instead of the two seds, but it did not work:
awk '{ print gsub(/<regex>/, <replace with>,$1), $2, $3, $4, substr($5,1,8}
the sed works ok, but it would be cooler to make the replacement within the awk command:
gsub(/->/,-> IN, $1)
Is there a way where i could replace the value of the $1 column in the awk print string?
Moving right along, I have a folder of MP3 files containing various Movie sound tracks and scores. I'm using Audio Tag Tool to tag all the files at once with an "Artist" of "Soundtrack", and to inherit the "Title" tag from the file name. After that, I will rename all the files (Using Audio Tag Tool -- awesome program, btw) with the format "<Artist> - <Title>.mp3"
The problem, is many of my files already contain the string "Soundtrack", which would be redundant. I happen to be a perfectionist, so I'm unable to ignore it and move on. Hence my question to you fine folk: I want to delete all instances of "soundtrack" (-i case irrelevant) in the filenames before I go through the above steps. But, its not quite that simple. This is a sample of some of the file names:
[Code]....
I've been trying to understand pthread in C a little better. So I made a simple program that takes in a string from the command line and creates a thread to print the string. I've looked online and copied the basic concepts but there are something things I'm confused about. The programs works just fine, but I have questions. Here's what I have so far.
[Code]....
One thing I'd like to know is why the 3rd argument in the pthread_create function which is my SendMessage function needs to be typecasted to a void pointer and then send the address of the function. Also as for the 4th argument, I would see typecasting to void pointer in some of the pthread examples I saw online, but in my case I'm passing a char pointer, would this be correct? In which case would I ever want to pass a void pointer?
Do I need a pthread_exit(NULL) in my main and in the SendMessage function? If so, why? I added the sleep() function so that I could let the pthread_exit function in my SendMessage function execute first. I simply saw that the online examples on pthread had pthread_exit() in both locations.
I have a line in a text file that has 40 random characters within a tag and i want to change the characters to a new set of 40 random characters (alphanumeric a-z 0-9 etc)
The line in the text file looks like this:
Quote:
How would i go about doing that?
Also second question same as the above but how would i remove them instead of replacing them?
If I have a word in a text file and I need to replace it by another word (for example, i need to replace abc by fff) so what is the command I can type it?
I am using vi editor.
I have a String that I would like to sign using a given RSA Private key. I thought this would be relatively easy but I have not been able to find out how to do it, unless I'm looking to far into a simple problem. Do i have to put the string into a file, and sign the file, or can i just sign the string/message?
View 7 Replies View RelatedI 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...
I need to creates string suffixes out of a Reference string. for eg. suffixes of abcdefg will be
1)bcdefg
2)cdefg
3)defg
and so on...
create an array of pointers to point to the first few characters and then use that pointer to print the rest of the string.But when i print using the pointer i get GARBAGE values! shudn't std::cout<<ptr[w] print the string following the char it is pointing to? why do i get garbage values?
So if I'm given a location of a file like:
How can I just take the type of the file at the end? I know I can use strrchr() for a period to get the pointer to the period just before file type. Is there a build in string function that will just take the rest of the string from a certain point on forward in the string? I know it wouldn't be much work to make it myself, but I figured I would find out if it already existed before doing it.
Code:
The error is:
Code:
What I want to do is take input of ip4 as a string, convert it to an integer to add 1 to it, then reconvert it back to a string. Its not working.
My full code is:
Code:
I've been given a custom-made string class which handles string, wstring and bstr. It has a number of methods and assignment operators to convert to and from different types. The app I work on compiles happily in VS6 and VS2008, but when trying to compile in Redhat (version 4.1.1 in Redhat 5.0)
[code]....
I have the following two type of strings1: A/D2: A/C/DI am trying to write a subroutine to check whether all of the letters in string 1 appears in string 2. If yes, return true. If not, return false. In the above example, all the letters (A and D) in string 1 are also present in string 2, so I return true.
View 4 Replies View RelatedThe command
Code:
date
produces
Code:
Sun Jun 13 14:18:52 CDT 2010
I want to show some of this information in a file. So I use
[Code]....
i want to two add two sting so this give me a url in this format:- "ftp://10.114.5.0/single.txt" for this i have written this code in "test.c"
#include <stdio.h>
#include <string.h>
int main ( int argc, char *argv[] )
{
if ( argc != 3 ) /* argc should be 2 for correct execution */
{
[Code]....
what are line i should add in this code.i have tryed by strcat but it is returning string in some bad format.
Today, i checking my error log of Apache. I have look many IP brute scan URLo, i collect, export that to ip.txt and i need grep IP with connection >=8I don't know command to solve that. Example ip.txtQuote:
101 210.13.73.30
161 58.210.77.98
164 115.168.71.87
[code]....
I'm facing problems in developing the script as there are errors that sometimes i dun have any idea on how to solve it.What i'm doing now is not homework, but i had been assigned to develop some system in linux.
My problem currently is on sub-string matter, where i need to read the line from file/directory and based on the line retrieved,i need to seperate the information in the line and assign as variable..
Below are my script:
Thus, the output something like this: file_name successfully ran on Mon Jul 12 23:15:00 SST 2009.
Now, what i need to do is to extract certain information from that line which is the name, date, time and the status
The desired output is:
So,my next step is to identify the sub-string and assigned as variable first in order to parse the info and output it.
Thus,my script is:
But i received error message which is:
I'd like a sed command to replace all decimal values greater than 0.5 with nothing in a tab delimited text file.
EX:
There would be one tab before 0.301 and two tabs after it. This way when you paste the text into an excel spreadsheet, there are empty cells where you deleted values.
I thought the sed command would be something like:
But this will delete everything.
What I need is something that will start deleting when it sees 0.[5-9] and stop when it reaches a tab. I know you can use [^character]+ to do this, but it doesn't seem to work with a TAB as the character.
Another idea I had would be to have sed replace from 0.[5-9] to 0. and replace with a tab + 0. But I also cant get [^0.]+ to work as it only works with single characters.
Do I have the convert the int to a string using stringstream then convert the string to a char? or is there a more direct way?Also is there a way to tell the length of a int?
View 5 Replies View RelatedPossible Duplicate: replacing dot in string, but leaving last one replace the "." [dots], but leave the last one: e.g.: .txt [there could be random number of dots in the string, even zero, i just need the last one]
$ echo 'someth.ing.something.txt' | SOMEMAGIC
someth-ing-something.txt
$
What's the best command to use to grab just a regular expression from some text input? I've got is some input is in the form:
<uninteresting><start-marker><good stuff><end-marker><uninteresting>
I can construct a RE to match <start-marker>.*<end-marker>, but is there a utility that would return *just* the <good stuff> I'm interested in? I realise that the alternative is something along the lines of:
Code:
cat <input-file> | awk -F'start-marker' 'print ${2}' | awk -F'end-marker' 'print ${1}'
but it would be better if I could do it all in one go.
I would like a command or a bash script that search all files in all sub, modified last 12 hours, in /var/logs and that contains "alfa" or "bravo". The output should be filename of the file or files that contains that.
View 3 Replies View RelatedI'm writing a centralized logging piece, and I need to grep out logs that have specific date tags. The date command returns abbreviated months (Sep), via "#date -d yesterday '+%b'" but I need it all caps. ie SEP vice Sep. Otherwise the grep doesn't catch it
View 3 Replies View RelatedI 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]....
How do i convert variable to string?
For example:
So how do i make the code with variable work?
I need to find this "TYPE=MyISAM;" and replace with "ENGINE=MyISAM;" in all .sql files in a directory. How can I do this with sed?
View 2 Replies View RelatedI've a string "this.is.a.name", and I would like to return "is.a.name". How can I do that in bash?
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