Help with changing header of tsv with 30 million lines
Hi
My 30 million line file has a header
I want to replace all instances of s1 to s4 with L1 to L4 and then all instances of s5 to s8 with W1 to W4 in the header using a shell script so I don't have to use an editor.
I realise I can use something like
but what form would a shell script need to take to do this on multiple files?
Hello,
Does changing a header in a shared library under Solaris (say adding a new class data member) will result in not only compiling that library but all of the libraries that depend on that lib that was changed because of the change in the object's size? What about adding a virtual function?... (0 Replies)
I have a log file that is about 1.2 million lines long and about 300MB.
we need a way to clean up this file and only keep the last few thousand lines.
if i use tail command we run our of memory as the file is too big.
I do have a key word to match on.
example, we want to keep every line... (8 Replies)
awk -F ";" '{if($10>80 && NR>1) print $0 }' txt_file_*
I am using this command to print the lines which has 10th field more then 80 and leaving the first line of the file which is the header.
But this is not working , the first line is is coming as output , please correct me .
thanks (2 Replies)
How can i tweak sendmail configuration files so that the "Received:" field is removed from email header information?
Or else can i change Received: (from enswitch@localhost) in email header to something likeReceived: (from xyz@localhost)?
---------- Post updated at 09:57 PM ---------- Previous... (2 Replies)
Hi,
I need a help in creating a report file.
The input file is like this
1 A
2 B
3 V
4 X
5 m
6 O
7 X
8 p
9 a
10 X
There is a header which i have to print & save the result as a output file.
The header has multiple lines on is like say:
New New
S.No Name (15 Replies)
Dear All,
I have two files both containing 10 Million records each separated by comma(csv fmt).
One file is input.txt other is status.txt.
Input.txt-> contains fields with one unique id field (primary key we can say)
Status.txt -> contains two fields only:1. unique id and 2. status
... (8 Replies)
these are numeric ids..
222932017099186177
222932014385467392
222932017371820032
222932017409556480
I have text file having 300 millions of line as shown above. I want to find duplicates from this file. Please suggest the quicker way..
sort | uniq -d will... (3 Replies)
HI ,
i have to print the first header of df -h (Filesystem Size Used Avail Use% Mounted on)and line which conatin size Network path only.
Filesystem Size Used Avail Use% Mounted on
/test/sda3 35G 1.8G 32G 6% /
/test/sda10 7.8G 1.1G ... (3 Replies)
I've been struggling with this one for quite a while and cannot seem to find a solution for this find/replace scenario. Perhaps I'm getting rusty.
I have a file that contains a number of metrics (exactly 3 fields per line) from a few appliances that are collected in parallel. To identify the... (3 Replies)
Discussion started by: verdepollo
3 Replies
LEARN ABOUT DEBIAN
edvips
EDVIPS(1) General Commands Manual EDVIPS(1)NAME
edvips - edit header of a vips image file
SYNOPSIS
edvips [OPTION...] vipsfile
DESCRIPTION
edvips alters a VIPS image file's header. This is useful for setting the resolution, for example.
The options are:
-x, --xsize=N set Xsize to N
-y, --ysize=N set Ysize to N
-b, --bands=N set Bands to N
-f, --format=F set BandFmt to F (eg. uchar)
-i, --interpretation=I
set Interpretation to I (eg. xyz)
-c, --coding=C set Coding to C (eg. labq)
-X, --xres=R set Xres to R pixels/mm
-Y, --yres=R set Yres to R pixels/mm
-u, --xoffset=N set Xoffset to N
-v, --yoffset=N set Yoffset to N
-e, --setext replace extension block with stdin
Be very careful when changing Xsize, Ysize, BandFmt or Bands. edvips does no checking!
EXAMPLES
To set the Xsize to 512 and Bands to 6:
edvips --xsize=512 --bands=6 fred.v
or
edvips -x 512 -b 6 fred.v
Extract the XML metadata from an image with header(1), edit it, and reattach with edvips(1).
header -f getext fred.v | sed s/banana/pineapple/ | edvips -e fred.v
RETURN VALUE
returns 0 on success and non-zero on error.
SEE ALSO header(1)COPYRIGHT
K. Martinez 1993
30 June 1993 EDVIPS(1)