I'm a linux user, but definitely no expert writing a linux or awk script which can concatenate a default string to each line in a file. For example, I would like add "This is the end" to all lines in a certain file, so that after running the script the file would look like:
This is line 1 This is the end
This is line 2 This is the end
Some text on line 3 This is the end
...
I'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 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]....
I have a file that I need to scan and output data between Number and End containing string 123.
Number 1:
6
7
123
1
End
i am having following lines in a file called test.
subscribe parser for dinesh
extend size for dinesh
subscribe parser for anish
unsubscribe parser for dinesh
extend size for arvind
I want to delete all lines which contains the string "dinesh". Is it possible.
How 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
What 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.
I 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:
I am doing molecular dynamics where I have to edit files. I have looked at tutorials for grep and sed but can't find my solution. The files produced in my simulations look something like this:
ATOM 1825 NE2 GLN 112 113.646 27.895 14.456
ATOM 1826 HE21 GLN 112 114.020 26.957 14.490
ATOM 1827 HE22 GLN 112 112.649 28.039 14.388
[code]...
I need to find a string in a file ... then delete the line it is on, as well as the next 6 lines. Or, delete the line the string is on and all subsequent lines until the search finds the character "["
example:
filename = test.txt
contents:
[foo]
test>test
test>test
test>test
[Code]....
so, in this example. I'd like to search the file for string 'foo' and delete all lines from that line until [bar] (not deleting the line with [bar])
My 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]...
what'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 RelatedI have a large text file that's formatted sort of like this:
Code:
foo bar
blah
[code]...
I need to compare 2 files using diff. The problem I've encountered is that I need to exclude certain lines that contain certain phrases. I know that diff supports the -I switch but no matter how I try to form the regexp it doesn't seem to work the way I expect it to. If anyone has used the -I switch before could you please post some examples of how it is used.
diff -I "[skipthisline]" file1 file2 > output.diff
I need to exclude lines that contain the string "[skipthisline]" but I have no idea what syntax is used after the -I switch. Is is supposed to be included in quotes or slashes /[skipthisline]/ or entered without either? I need to include a backslash before each bracket so that it's not interpreted as a set of characters like [a-z] but is instead interpreted as a string. Do I need to use 2 backslashes? "\[skipthisline\]"
Is it sufficient to simply type the string I want to match or do I need to match the entire line in order to exclude it from the output?
.*[skipthisline].*
or
^.*[skipthisline].*$
copy string a to string b and change string b with toupper() and count the chars
View 3 Replies View RelatedI 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].....
I'm using the default Ambiance theme with 11.04, but my bottom gnome panel has strange white vertical lines as well as a very light background on active windows. It's almost as if it's using the Clearlooks theme for open applications and Ambiance for everything else. Also when I right click some of the systray items I get weird backgrounds in the tooltip. So far I've tried deleting all my .gnome config folders in my home directory, logging in/out etc. and nothing seems to work. Attached screenshots of the problems.
View 1 Replies View Relatedi downloaded backtrack 4 (final) and booted the iso onto a flash drive using unetbootin. i then changed the boot order so the flash drive was first. after i did that i got into backtrack 4 did the install.sh and now i cant boot windows 7. even after changing the boot order to default, i turn my computer on and get a message that says:
Ubuntu 8.10, kernel 2.6.30.9
Ubuntu 8.10, kernel 2.6.30.9 (recovery mode)
Ubuntu 8.10, memtest86+
Other operating systems :
Memory Test (on /dev/sda1)
Ubuntu 8.10, kernel 2.6.30.9 (on dev/sda1)
Ubuntu 8.10, kernel 2.6.30.9 (recover mode) (on dev/sda1)
Ubuntu 8.10, memtest86+ (on dev/sda1)
[Code]....
i can only boot backtrack 4 OS, i really want to know what can i do to be able to boot my windows 7 home premium os.
I am trying to give a parameter or string by default to the prompt after booting from CD/DVD after modifying isolinux.cfg file For this I am able to successfully alter the boot.iso present in RHEL+CENTOS DVDs using the below command mkisofs -o /new.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -J -R -V disks . But, when I am trying to alter the Netbackup BMR iso file it does not has boot.cat file and also giving me below errors.
[Code]...
I've just installed Kubuntu 11.04, switched on wobbly windows effect. It runs very smooth on my Nvidia GeForce 7600 GS with dual screen twinview turned on. However, I get these lines when I drag/move the window upwards - see screenshot:
View 6 Replies View RelatedI 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 been experiencing a problem where the screen loads and after initial first few lines breaks up into multiple repetitions of lines. Reloading helps but has to be repeated when pageing down. Mail is no problem; it is supplied by my network provider. OS is openSUSE 11.2 which I update when advised. Below is a sample from the error console:
[Code]...
How do you remove parts of strings using python? Such as, if I have something like:
Code:
erme1 sdifskenklsd
erme2 sdfjksliel
[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 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?
I 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.
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.