readahead(8) System Manager's Manual readahead(8)NAME
readahead - file preloader for boot process optimization
SYNOPSIS
readahead [options] <file-list> [another-file-list [...]]
DESCRIPTION
readahead is a files preloader designed to optimize the disk I/O during the boot process.
OPTIONS -b, --build
build optimised files list only, without sorting.
-s, --sort
build and sort list of files only (implies -b).
-o, --output <file>
write sorted list of files to file.
-d, --dont-sort
preload files described by an already sorted files list.
-h, --help
print the usage information.
-v, --verbose
enable the verbose mode.
-t, --timing
report time spent on each operation.
-m, --maxsize <max size>
maximum size in KiB a file can be in order to be preloaded, default is 10240.
<file-list> [another-file-list [...]]
One or more files containing the list of files to be preloaded or sorted. The files list can be generated by readahead-collector(8).
FILES
/etc/default/readahead-fedora
SEE ALSO readahead-collector(8), readahead(2),
AUTHORS
Arjan van de Ven <arjan@infradead.org>,
Ziga Mahkovec <ziga.mahkovec@klika.si>, Karel Zak <kzak@redhat.com>,
This manual page was written by Raphael Geissert <geissert@debian.org>
July 2011 readahead(8)
Check Out this Related Man Page
readahead(8) System Manager's Manual readahead(8)NAME
readahead - file preloader for boot process optimization
SYNOPSIS
readahead [options] <file-list> [another-file-list [...]]
DESCRIPTION
readahead is a files preloader designed to optimize the disk I/O during the boot process.
OPTIONS -b, --build
build optimised files list only, without sorting.
-s, --sort
build and sort list of files only (implies -b).
-o, --output <file>
write sorted list of files to file.
-d, --dont-sort
preload files described by an already sorted files list.
-h, --help
print the usage information.
-v, --verbose
enable the verbose mode.
-t, --timing
report time spent on each operation.
-m, --maxsize <max size>
maximum size in KiB a file can be in order to be preloaded, default is 10240.
<file-list> [another-file-list [...]]
One or more files containing the list of files to be preloaded or sorted. The files list can be generated by readahead-collector(8).
FILES
/etc/default/readahead-fedora
SEE ALSO readahead-collector(8), readahead(2),
AUTHORS
Arjan van de Ven <arjan@infradead.org>,
Ziga Mahkovec <ziga.mahkovec@klika.si>, Karel Zak <kzak@redhat.com>,
This manual page was written by Raphael Geissert <geissert@debian.org>
July 2011 readahead(8)
How can I print ( to the screen ) the files in the current directory sorted from the biggest size to the smallest size by using "ls -l"
10x , Edy . (2 Replies)
Hello
when i execute the following command
$sort list
i get the list sorted out onto my screen
if i use
$sort list >listsort
i get an file listsort with the list sorted out
If i use
$sort list >list
i get an empty file list
also when i use
$sort list | >list
i get an empty... (4 Replies)
Hi there
I'm running HP-UX at testdrive.com and its absolutely smashing :)
Unfortunately I have few problems that I dont know how to sort it out:
1. I made a directory called aaa, and now I want to delete it.
If I use rm aaa, i have this: rm: aaa directory
Where is the problem why its... (1 Reply)
Hello,
does anyone know how I can create a boot dvd with my fedora installation ....
ie
I am attempting to build a system identical to another production server so want to copy all files to cd and build the new system from that cd ,,,
any ideas?
Thanks (2 Replies)
I need to sort a list of files based on aphabetical order, and files in each such group should be in sorted in timestamp.
ie,
Resultant Files list should look like ,
Files-names starts with A in sorted timestamp, then
Files-names starts with B in sorted timestamp then
Files-names starts... (3 Replies)
Hi List is
000|2008-07-17|556543|RTJ|35-RTGJ|EYT
465|2008-11-10|567789|GHJ|45-DGHH|ETU
533|2008-09-06|567789|GHJ|45-DGHH|ETU
How does it do it?
sort -t ':' +0 -1 -n +1 -2 +2 -3 -o list list (6 Replies)
Hi
I am using the command below to list the 10 biggest directories and files in my present directory
du -hs * | sort +0 | tail -10
the output is
8K disk-space
16K rish
32K WINDOWS
48K tests
104K imgvdEwLa.jpg
168K 020204_aerosmith_1024768.jdk
3.2M Acdc -... (4 Replies)
Hi
I am trying to sort a file of 88075743B size. I am doing some processing on the file and after the processing is done; I get 2 files temp1 and temp2. I need to combine both these files as one and this final file should be sorted on fields 1 and 2. Space is the delimiter between fields. Record... (2 Replies)
Hi guys,
I need to do 100 files comparison after I sorted the files. There are no specific key for sorting so i plan to arrange the files based on the file size. The command that i used to sort the files by size is as per below:-
ls -l | sort +4rn | awk '{print $5, $9}'
The problem that i... (3 Replies)
Hii guys,
I need to sort my file and remove duplicates before writing to another file. The first line in the file are column names. I dont want this line to be sorted and should always be the first line in the output.
sort -u file.txt > file1.txt. is the command that i am using... (4 Replies)
In my fodler I have lots of .gz files and a few other files
I can use ls *.gz to list all those files
but how to I list files which do NOT end in .gz
thanks (4 Replies)
Hello,
I am trying to add a line (usually just a word) to some text files in a directory that are already sorted. I just don't want to run the sort command again because it can take a long time when the text or log files are really huge. I have a bashscript that will take in the 1st argument... (7 Replies)
Hello everyone
I am doing a join command. Obviously, before I need two files sorted first. ( Both files have headers and have about 2 million lines each one )
The problem is, one of the files has null values in the key to sort (which is the first filed ). For example I have the original... (4 Replies)