Friends,
I have text file with 700,000 rows.
Once I load this file to our database via our cutom process, it logs the row number for rejected rows.
How do I delete rows from a Large text file based on the Row Number?
Thanks,
Prashant (8 Replies)
How does one delete a large file say file.txt of size 4331456 blocks (2217697280 bytes) in a directory in sco openserver 6 ...
Upon executing the command
# rm file.txt
the error message is as below ...
rm: file.txt non-existent: Value too large for defined data type (error 79)
any help... (1 Reply)
I have an extremely large csv file that I need to search the second field, and upon matches update the last field...
I can pull the line with awk.. but apparently you cant use awk to directly update the file? So im curious if I can use sed to do this... The good news is the field I want to... (5 Replies)
Hi,
I have a data file that contains 61 columns. I want to delete all the columns except columns, 3,6 and 8. The columns are tab de-limited. How would I achieve this on the terminal?
Thanks (2 Replies)
Hi All,
I'm a newbie here, I'm just wondering on how to delete a single record in a large file in unix.
ex.
file1.txt is 1000 records
nikki1
nikki2
nikki3
what i want to do is delete the nikki2 record in file1.txt. is it possible?
Please advise,
Thanks, (3 Replies)
Hi all,
I need a script to delete a large set of files from a directory under / based on an input file and want to redirect errors into separate file.
I have already prepared a list of files in the input file.
Kndly help me.
Thanks,
Prash (36 Replies)
Hi All,
I have a very large single record file.
abc;date||bcd;efg|......... pqr;stu||record_count;date
when i do wc -l on this file it gives me "0" records, coz of missing line feed.
my problem is there is an extra pipe that is coming at the end of this record
like... (6 Replies)
I will simplify the explaination a bit, I need to parse through a 87m file -
I have a single text file in the form of :
<NAME>house........
SOMETEXT
SOMETEXT
SOMETEXT
.
.
.
.
</script>
MORETEXT
MORETEXT
.
.
. (6 Replies)
Dear Users,
Appreciate your help if you could help me with splitting a large file > 1 million lines with sed or awk. below is the text in the file
input file.txt
scaffold1 928 929 C/T +
scaffold1 942 943 G/C +
scaffold1 959 960 C/T +... (6 Replies)
Hello, my first thread here.
I've been searching and fiddling around for about a week and I cannot find a solution.:confused:
I have been converting all of my home videos to HEVC and sometimes the files end up smaller and sometimes they don't. I am currently comparing all the video files... (5 Replies)
Discussion started by: Josh52180
5 Replies
LEARN ABOUT OSX
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)