Not clear whether you need just the filenames or their lines as well, also I'm assuming that you're using the pipe | as an alternation operator (RE) - not as a physical part of the files' records. Modify if needed.
If using GNU find/xargs ( most Linuxes ), use their -0 option to handle problematic filenames.
anyone know of a FREE logfile checker that they would recommend?
looking to scan thru syslog, sulog, messages, etc... looking for security type related entries., thanks,
brian (1 Reply)
Hi
I need some help using shell script to edit a file.
My original file has the following format:
/txt/email/myemail.txt
/txt/email/myemail2.txt
/pdf/email/myemail.pdf
/pdf/email/myemail2.pdf
/doc/email/myemail.doc
/doc/email/myemail2.doc
I need to read each line. If the path is... (3 Replies)
How can I remove all data that contain domain e.g zzgh@something.com, sdd@something.com.my and gg@something.my in one file? so that i only have data without the domain in the file.
Here is the file structure "test.out"
more test.out
1 zzztop@b.com
1 zzzulll
1 zzzullll@s.com.my
... (4 Replies)
I have a script file that file type is
ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs)
Now I want to get the contents of this file. How can I ?
Any help me to get cotents of this file type? (2 Replies)
epson microfilm 500 scsi:
Is there any way to make this work under linux ? I'm using pclinuxos, it shows the machine in the device panel as sg2 and lists the machine , so Im guessing the kernel knows what it is, but I can't view it as a scanner or capture or input device . What catagory does... (4 Replies)
Hey guys..
What is the best tool that can be used on Linux for IP scanning tool that can bring ping status, hostname, and any other open service. I wish I can find a tool like "The Dude" from Mikrotik, but that works only under Windows.
Thanks (4 Replies)
Hi, somewhat of a newbie with Linux, although I have been at it for about three weeks now.
Is there a way to wake up or initialize my scanner with a command in the terminal? (6 Replies)
Running Debian 8.5 on a Dell Laptop
I have an Epson V39 scanner. Simple scan cannot detect it.
Here is what I have:
root@server1:/home/server1# sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first... (2 Replies)
Discussion started by: Meow613
2 Replies
LEARN ABOUT DEBIAN
rl
rl(1) User Commands rl(1)NAME
rl - Randomize Lines.
SYNOPSIS
rl [OPTION]... [FILE]...
DESCRIPTION
rl reads lines from a input file or stdin, randomizes the lines and outputs a specified number of lines. It does this with only a single
pass over the input while trying to use as little memory as possible.
-c, --count=N
Select the number of lines to be returned in the output. If this argument is omitted all the lines in the file will be returned in
random order. If the input contains less lines than specified and the --reselect option below is not specified a warning is printed
and all lines are returned in random order.
-r, --reselect
When using this option a single line may be selected multiple times. The default behaviour is that any input line will only be
selected once. This option makes it possible to specify a --count option with more lines than the file actually holds.
-o, --output=FILE
Send randomized lines to FILE instead of stdout.
-d, --delimiter=DELIM
Use specified character as a "line" delimiter instead of the newline character.
-0, --null
Input lines are terminated by a null character. This option is useful to process the output of the GNU find -print0 option.
-n, --line-number
Output lines are numbered with the line number from the input file.
-q, --quiet, --silent
Be quiet about any errors or warnings.
-h, --help
Show short summary of options.
-v, --version
Show version of program.
EXAMPLES
Some simple demonstrations of how rl can help you do everyday tasks.
Play a random sound after 4 minutes (perfect for toast):
sleep 240 ; play `find /sounds -name '*.au' -print | rl --count=1`
Play the 15 most recent .mp3 files in random order.
ls -c *.mp3 | head -n 15 | rl | xargs --delimiter='
' play
Roll a dice:
seq 6 | rl --count 2
Roll a dice 1000 times and see which number comes up more often:
seq 6 | rl --reselect --count 1000 | sort | uniq -c | sort -n
Shuffle the words of a sentence:
echo -n "The rain in Spain stays mainly in the plain."
| rl --delimiter=' ';echo
Find all movies and play them in random order.
find . -name '*.avi' -print0 | rl -0 | xargs -n 1 -0 mplayer
Because -0 is used filenames with spaces (even newlines and other unusual characters) in them work.
BUGS
The program currently does not have very smart memory management. If you feed it huge files and expect it to fully randomize all lines it
will completely read the file in memory. If you specify the --count option it will only use the memory required for storing the specified
number of lines. Improvements on this area are on the TODO list.
The program uses the rand() system random function. This function returns a number between 0 and RAND_MAX, which may not be very large on
some systems. This will result in non-random results for files containing more lines than RAND_MAX.
Note that if you specify multiple input files they are randomized per file. This is a different result from when you cat all the files and
pipe the result into rl.
COPYRIGHT
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Arthur de Jong.
This is free software; see the license for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Version 0.2.7 Jul 2008 rl(1)