If you are attempting to insert 100 bytes at the end , then it isn't appedning at all. As far as I know, it the File system has to rearrange the blocks to accomadate the new 100 bytes.
So if you are inserting 100 bytes at the head of 60GB file, ideally i think the performance would be appending 60GB data onto a 100bytes file. I guess so.
when directing some text into a file can you choose where it goes like the top of the file (which is text aswell) or the middle??
if so how - especially would like to know how to do so in vi (text editor)
If i were to enter an argument ($1) into a another argument ($2)
would it would be... (6 Replies)
Hi all,
I have a binary file (orig.dat) and two special delimiter strings 'AAA' and 'BBB'. My binary file's content is as follow:
<Data1.1>AAA<Data1.2>BBB
<Data2.1>AAA<Data2.2>BBB
...
<DataN.1>AAA<DataN.2>BBB
DataX.Y might have any length, and contains any kind of special/printable... (1 Reply)
say I want to insert "this is a test" as the first line into file A, besides
echo "this is a test" > /tmp/tmpfile
cat /tmp/tmpfile fileA >> /tmp/result,
is there any simple way I can do it? thanks (7 Replies)
Hello,
I have a file containing data and the headers of the data and the headers of the data randomly anywhere in the file but always with the specific string col1;col2;col3
112233;1133244;112344
112233;1133244;112344
112233;1133244;112344
112233;1133244;112344
Col1;Col2;Col3... (4 Replies)
hi experts,
anyone knows how can i find a string in a multiple binary files in a multiple directories and display the file name containing the string?
i mean i have lots of folders with binary files and i am looking for specific string within one of these files i would like to know the right... (6 Replies)
I'm trying to take mrt output and put it at the top of a file along with the date and time. I was able to do it at the bottom of the file with the following
printf "********** $(date) **********\n\n" >> $OUTPUT_PATH/$HOSTNAME
mtr -r -w -c 10 $HOSTADDRESS >> $OUTPUT_PATH/$HOSTNAME
printf... (2 Replies)
i am having file like this
#!/bin/bash
read -p 'Username: ' uservar
match='<color="red" />'
text='this is only a test
so please be patient
<color="red" />'
echo "$text" | sed "s/$match/&$uservar\g"
so desireble output what i want is if user type MARIA
this is only a test
so please... (13 Replies)
Discussion started by: tomislav91
13 Replies
LEARN ABOUT DEBIAN
jpegexiforient
JPEGEXIFORIENT(1) User Commands JPEGEXIFORIENT(1)NAME
jpegexiforient - reads or writes the Exif Orientation Tag
SYNOPSIS
jpegexiforient [switches] jpegfile
DESCRIPTION
This is a utility program to get and set the Exif Orientation Tag. It can be used together with jpegtran in scripts for automatic orienta-
tion correction of digital camera pictures.
The Exif orientation value gives the orientation of the camera relative to the scene when the image was captured. The relation of the '0th
row' and '0th column' to visual position is shown as below.
Value | 0th Row | 0th Column
------+-------------+-----------
1 | top | left side
2 | top | right side
3 | bottom | right side
4 | bottom | left side
5 | left side | top
6 | right side | top
7 | right side | bottom
8 | left side | bottom
For convenience, here is what the letter F would look like if it were tagged correctly and displayed by a program that ignores the orienta-
tion tag:
1 2 3 4
888888 888888 88 88
88 88 88 88
8888 8888 8888 8888
88 88 88 88
88 88 888888 888888
5 6 7 8
8888888888 88 88 8888888888
88 88 88 88 88 88 88 88
88 8888888888 8888888888 88
jpegexiforient output the Exif Orientation Tag in a JPEG Exif file. With the options -1 .. -8, it can also be used to set the tag.
OPTIONS
--help display this help and exit
--version
output version information and exit
-n Do not output the trailing newline
-1 .. -8
Set orientation value 1 .. 8
AUTHOR
Guido Vollbeding <guido@jpegclub.org>
SEE ALSO jpegtran(1), exifautotran(1)jpegexiforient February 2005 JPEGEXIFORIENT(1)