Programming :: Read Text File (Distribute Its Contents)
Jan 22, 2011
How can read the file /var/etc/allInOne.cfg and distribute its contents on multiple cfg files using C language. /var/etc/allInOne.cfg contain the data and the path of each text file.
The source file "/var/etc/allInOne.cfg "look like this:
line1
line2
...
line10
filePath:/var/etc/file1.cfg
line12
line13
...
line14
filePath:/var/etc/file2.cfg
linen
..
filePath:/var/etc/filen.cfg
the result will be :
The expected result is:
/var/etc/file1.cfg will contain line1 to line10
/var/etc/file2.cfg will contain line 12 to line13
/var/etc/filen.cfg will contain linen to linen-1
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Jan 11, 2010
I am trying to read the contents of a file into something else. I have a file.txt that I am working with, I want to read the file and take the data and run some commands with the data that it read. So if it read www.yahoo.com I want to be able to nslookup. Does that make sense? I have been trying to use the read command but that does not seem to work. I even was trying to read filename | > filename to see if I could even read any of the data at all. Nothing is working.
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Oct 19, 2010
a project using bluetooth to send data byte by byte to external devices buti'm not familiar using arrays to read file from another location before sending the data.If you could,do correct my codes.Here's my code,
void loop(){
char Msg[]={"Hello"};
char *start;
[code]...
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Mar 11, 2011
For example, I have a text file with data which lists numerical values from two separate individuals
Code:
Person A
100
[code]...
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Mar 11, 2011
For example, I have a text file with data which lists numerical values from two separate individuals
Code:
Person A
100
200
300
400
500
600
700
800
900
1000
1100
1200
Person B
1200
1100
1000
900
800
700
600
500
400
300
200
100
How would I go about reading the values for each Person, then being able to perform mathematical equations for each Person (finding the sum for example)?
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Apr 7, 2010
i am trying to write a program which will read input from a text file, check if each line contains any alphabets and then display a message imforming me if there is an alphabet in each line. My text file is formatted in this way...
[Code]....
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Jun 15, 2010
I have a text file that looks sort of like this:
Code:
blah blah blah
tons of unimportant stuff we don't care about
[code]...
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Oct 14, 2010
I want to be able to check the contents of a text file for a specific string and remove it from the file from the command prompt. I would basically be searching through a number of files and if a specific string is found I would like it removed automatically. pretty much a find and replace, were the replace is nothing. any one got any ideas on how you would do this. I already have the search part sorted just need to be able to remove the string I don't want from the multiple files.
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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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Jul 7, 2011
bash 3.1.17(2) I'm trying do write a shell script which must operate on each line of an ASCII text file. So, all the code must be inside a loop, and inside the loop, the first thing should be to read the next line from the file. I have the bash read command. But it reads from stdin. Any way to make read from a file?
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Feb 8, 2010
How to list the contents of a folder to a text file. I'm trying to list all my music, including all subfolders, etc. to a text file, but I can't remember the command.
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Mar 31, 2010
I am not especially cli adept so could someone tell me the best way to use the diff command to get the difference between a string of text and the contents of a file instead of between the contents of two files?
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Feb 3, 2011
Suppose I have a pair of files containing lists. The first file is called contigs.txt and it contains a list that looks like this:
Code:
Contig822
Contig826
[code]...
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Jan 28, 2009
I have a text file called file1.txt containing many lines eg.
line1
line2
line3
line4
line5
line6
Then i have another text file called file2.txt contains
3
5
6
Is there a command to remove the lines in file1.txt based on the keywords in file2.txt? note: It should remove line3,line5,line6 based on 3,5,6
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Apr 14, 2011
Columns are separated by SPACE. Column 5th is in quotation marks. How can I ask AWK to read everything between quotation marks ?
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Sep 15, 2010
im making a program (for the heck of it) that rewrites it code everytime it is run.(my ambition is to turn it into my c++ teacher and watch her be confuzled as to why she cant read my code and why it does weird things) Ive just started c++ programming, and managed to rewrite a program so that when it is run a second time, it says hello world. My problem is that I can only input the file as a single string. What I need to do is to be able to input the entire file into the c++ program, as a single object and then ifstream it out with the destination as the source code.
Also, it would help alot if there was someway to write additional lines to an existing text file instead of overwriting what is already there. That way, every time my c++ runs and rebuilds itself, it adds another couple of lines of code to a txt file and when the final iteration is complete, it loads a text file that was created by the program and uses it to program itself. I heard there is some sort of spawn command, can it be used to open up notepad and write to it? it would be awsome if my various programs could open different notepads with various messages
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Nov 17, 2008
I have two files list1.cfg and list2.cfg both files contains differentrecords details like
List1.cfg
NAME1:25:C:NAME LINE1:
NAME2:25:C:NAME LINE2:
CITY:25:C:City:
[code]....
Now I want to append contents list2.cfg to list1.cfg(It ispposible using cat list2.cfg >>list1.cfg) but I want to check if content of (record) in list2.cfg is present in list1.cfg then dont append it otherwise append it.
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Jul 16, 2011
A long time ago I wrote a short essay about the 'federal' 'reserve' board. I don't remember it's name or format. I think it's somewhere on my rather large hard discs (to of them divided into various partitions).I'm trying to write a command line that will find it based on a quote that is in it: "our fathers brought forth"I have tried various configurations of grep, and or combining grep with find, but I'm getting nowhere. I really don't understand the syntax of either command, or how they work together, and the examples that I can find are really no help at all.
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Jan 19, 2009
I need to insert 3-4 lines of text to the beginning of a text file. The file is a largish MYSQL dump, the result of a backup shell script. This shell script should insert the required text.I've wrestled with sed, but lost.
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Jan 13, 2010
I have to delete a certain line of text from the a textfile via ubuntu's shell scripting.I have done research, and it seems that most people advocate the usage of sed /d option. sed makes does not edit the text file. Hence, most options I discovered involved the use of a temporary variable/textfile and then overwriting the old file with the temporary new file. Is there anyway whereby I can bypass the use of temporary storage containers? I hope there is any magical combination of commands to edit the file directly.
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Jan 8, 2011
I want to display something in my text view widget in glade using c code. that's all right.
now I need to attach a save button beneath the text view.so that on click the text view content should save as a txt file..
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Feb 9, 2011
I want to display the contents of a particular log file (simple text file, I mean in Linux). But there is a problem: The contents need to be organized in a fixed format. Have a look at this log file:
sampleLog.txt
Code:
User Name: XYZ
Reported Problems Description: Blah! Blah! Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah!
[code]....
So, while displaying the contents of above file on a web page, I want to format the field names found in the log file: User Name:, Reported Problems Description:, and Remarks:. These fields may contain a variable length of text and no specific line number is assumed for them to appear on.
The desired output should look like this:
User Name: XYZ
Reported Problems Description: Blah! Blah! Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah! Blah!Blah!
[code]....
Well, what I am trying to do may sound wierd to some of you. The filed "Reported Problems Description:" can possible contain text which embeds colon (.
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Nov 4, 2009
i am trying to write a bash script. i have a text file called comp2.tmp which has a list of items in it
example comp2.tmp
Code:
filename.pdf
filename2.zip
filename3.ttf
and so on
I have another text file called comp1.tmp which should have the same list of files in it, but does not look as pretty
example comp1.tmp
Code:
someothertext here ...... 10/30/2009 ...... filename.pdf
=========================------------------==============
othertextagain .......... 09/28/2008 ...... filename2.zip
========================------------------===============
bunchmoretext ........... 04/12/2005 ....... filename3.ttf
and so on
i would like to check if the filenames listed in comp2.tmp exists in comp1.tmp
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May 27, 2010
want to watch the file continoulsy for any newly written data to file.Presently i am periodically opening the file and checking for the newly updated contents.Is there something like refresing the file descriptor, since open is a system call, calling it many times may affect performance. Does the tail program opens file multiple times to check for the updated contents when used with -f option.Can some one explain or give some links on how the filedescriptors remembers its end contents while some other programs keeps updating the file.
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May 3, 2010
a sed command to add a text before line number in text file? I have text file with 500 lines, and i want to add 3 more lines with text after line 300, OR before line 302, isn't no problem.
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Jun 26, 2010
I've got a command in a shell script:
Code:
php ./script.php > output.txt & echo $! > script.pid
This results in my script launching as a background process with output routed to
[code]...
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Feb 17, 2011
how can I set the cat command to read specified lines of a text file,like if I have a text file with 100 lines, who can I say cat only line 23 to 42?
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Jul 22, 2010
AKA "zipping on the fly .. the slow-as-molasses way." The list includes full pathnames to each file, and they're all in subfolders of the same parent folder (which, unfortunately, is not the root folder of the drive or system on which the files reside). A cleaned-up and radio-ready portion of the list looks like
Quote:
.../taiga/ahqr-va-choyvp/bv0884-073.jpg
.../taiga/ahqr-va-choyvp/bv2635-073.jpg
.../taiga/ahqr-va-choyvp/bv3067-175.jpg
[code]....
What I'd like to be able to do is zip all the files in the list into a single archive, to avoid the step of having to copy them to the same location (presumably another folder on the HD) and then zip that folder. I'm more inclined to make provisions about extracting to a single folder at some other time. Is this possible in BASH, or would I have to consider a faster, more robust scripting language such as python or perl?
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May 29, 2011
PI'm trying to write a script to list all open ports in the MINIUNPND chain in iptables and use the procotol, port and destination ip to open ports on another router using upnpc.Here is the output of iptables -L MINIUPNPD
Code:
>iptables -L MINIUPNPD
Chain MINIUPNPD (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere 192.168.3.124 tcp dpt:19955
ACCEPT tcp -- anywhere 192.168.3.124 tcp dpt:20054
ACCEPT tcp -- anywhere 192.168.3.130 udp dpt:10654
ACCEPT tcp -- anywhere 192.168.3.121 tcp dpt:29955
code....
No matter what i do i cant seem to remove the first 4 characters from the MYPROT array to leave only the digits. Also i cant seem to read the array back???
I thought it would simply be a loop reading each line and passing the fields in variables, executing upnpc commands i need then moving to the next line of the file until it reached the EOF.
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May 18, 2010
I want to list the contents of a zip file amd put each entry into an array. I've been doing
[code]....
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