Hello,
I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it?
Any help would be... (3 Replies)
i need help..!!!!
i have one big text file estimate data file size 50 - 100GB with 70 Mega Rows.
on OS SUN Solaris version 8
How i can remove first line of the text file.
Please suggest me for solutions.
Thank you very much in advance:) (5 Replies)
So, I want to read line-by-line a text file with unknown number of files....
So:
a=1
b=1
while ; do
b=`sed -n '$ap' test`
a=`expr $a + 1`
$here do something with b etc
done
the problem is that sed does not seem to recognise the $a, even when trying
sed -n ' $a p'
So, I cannot read... (3 Replies)
I have file which contains around 5000 lines.
The lines are fixed legth but having no delimiter.Each line line contains nearly 3000 characters.
I want to delete the lines
a> if it starts with 1 and if 576th postion is a digit i,e 0-9
or
b> if it starts with 0 or 9(i,e header and footer)
... (4 Replies)
Hi Experts,
I had to edit (a particular value) in header line of a very huge file so for that i wanted to search & replace a particular value on a file which was of 24 GB in Size. I managed to do it but it took long time to complete. Can anyone please tell me how can we do it in a optimised... (7 Replies)
Hi,
I have a huge file with a single line.
But I want to break that line into lines of with each line having five columns.
My file is like this:
code:
"hi","there","how","are","you?","It","was","great","working","with","you.","hope","to","work","you."
I want it like this:
code:... (1 Reply)
We have a huge file which has just one really large line; about 500 MB. I want to
1. Count all the occurrences of a phrase
2. Replace the phrase with another.
Trying to open it using vi has not helped as it complains that it is too large. Can any script help? Please advise.
Thank you, (12 Replies)
Hi,
I want to read a live log file line by line and considering those line which start from time stamp;
Below code I am using, which read line but throws an exception when comparing line that does not contain error code
tail -F /logs/COMMON-ERROR.log | while read myline; do... (2 Replies)
Hi ,
I would like to replace new line characters(\n) in a huge file of about 2 million records . I tried this one (:%s/\n//g) but it's hanging there and no result. Does this command do not work if the file is big. Please let me know if you have any other options
Regards
Raj (1 Reply)
Discussion started by: rajeevm
1 Replies
LEARN ABOUT DEBIAN
gifti_test
GIFTI_TEST(1) User Commands GIFTI_TEST(1)NAME
gifti_test - test reading/writing a GIFTI dataset
SYNOPSIS
gifti_test [...]
OPTIONS -help Show usage help.
-gifti_hist
Show giftilib history.
-gifti_ver
Show giftilib version.
-encoding TYPE
Set the data encoding for any output file.
TYPE = ASCII : ASCII encoding
TYPE = BASE64 : base64 binary
TYPE = BASE64GZIP : base64 compressed binary
-gfile OUTPUT
Write out dataset as gifti image.
-infile INPUT
Specify INPUT as the GIFTI dataset to read.
-no_data
Do not write out data.
-show Show final gifti image.
-slist LEN s0...
Restrict output to list of length LEN.
-verb VERB
Set verbose level.
EXAMPLES
1. read in a GIFTI dataset (verbose, show output?)
gifti_test -infile dset.gii
gifti_test -infile dset.gii -verb 3
gifti_test -infile dset.gii -show
2. copy a GIFTI dataset (check differences?)
gifti_test -infile dset.gii -gfile copy.gii
diff dset.gii copy.gii
3. copy a GIFTI data, but write out only 3 surf indices: 0,4,5
gifti_test -infile time_series.gii -gfile ts3.gii -slist 3 0 4 5
SEE ALSO
Website: http://www.nitrc.org/projects/gifti
AUTHOR
Richard Reynolds - SSCC, DIRP, NIMH, National Institutes of Health
This manual page was written by Michael Hanke <michael.hanke@gmail.com>, for the Debian project (but may be used by others).
gifti_test June 2010 GIFTI_TEST(1)