10-22-2012
What's your system? On something like Solaris, any of the standard system utilities are liable to refuse to operate on a text file that wide...
10 More Discussions You Might Find Interesting
1. Programming
How to generate a random integer with specific range(for example, from 1 to 1000)?
Also, how to convert a floating point number into a integer? (2 Replies)
Discussion started by: MacMonster
2 Replies
2. Shell Programming and Scripting
I want to be able to generate a random number within a korn shell script..
Preferably i would like to be able to state how many digits should be in this random number... ie 4 digits or 5 digits etc
Any ideas? (2 Replies)
Discussion started by: frustrated1
2 Replies
3. Shell Programming and Scripting
Could any one tell how can I generate random number from (0, 100..200) in perl?
Thanks! (2 Replies)
Discussion started by: zx1106
2 Replies
4. Programming
I saw this formula to generate random number between two specified values in shell script.the following.
$(((RANDOM%(max-min+divisibleBy))/divisibleBy*divisibleBy+min))
Give a example in book.
Generate random number between 6 and 30.like this.
$(((RANDOM%30/3+1)*3))
But I have a... (1 Reply)
Discussion started by: luoluo
1 Replies
5. Shell Programming and Scripting
Hi All,
I have extracted some report from database for few activities done.
Now I have a requirement to add some random time(In range of 10-35) in front of each activity.
Can be generated random numbers in any bash/sh shell within a given number range, let's say in between 10-30.
... (10 Replies)
Discussion started by: gr8_usk
10 Replies
6. Shell Programming and Scripting
Hi experts,
My csv file looks like this
U;cake;michael;temp;;;;
U;bread;john;temp;;;;
U;cocktails;sarah;temp;;;;
I'd like to change the value fo 2nd column to cf+random number , which will look maybe something like this
U;cf20187;michael;temp;;;;
U;cf8926;john;temp;;;;... (7 Replies)
Discussion started by: tententen
7 Replies
7. Shell Programming and Scripting
Here is my problem:-
I have a file with pipe separated values.
CR|20121021|079|ABC|N|DLS|00038|DLS|04750|1330597704|634234|634|0
CR|20121021|079|ABC|N|DLS|00038|DLS|05118|2071690102|354|351|3
CR|20121021|079|ABC|N|DLS|00038|DLS|05140|960051505|1088|1088|0... (4 Replies)
Discussion started by: Yoda
4 Replies
8. Shell Programming and Scripting
Need to use dd to generate a large file from a sample file of random data. This is because I don't have /dev/urandom.
I create a named pipe then:
dd if=mynamed.fifo do=myfile.fifo bs=1024 count=1024
but when I cat a file to the fifo that's 1024 random bytes:
cat randomfile.txt >... (7 Replies)
Discussion started by: Devyn
7 Replies
9. Shell Programming and Scripting
Hi,
Is anybody experience generate a pair of random number by using awk command?
I wanna to generate a pair of random number (range from 1 to 4124) and repeats it 416 times.
Desired output
2 326
123 1256
341 14
3245 645
.
.
.
I did write the below command:
awk... (5 Replies)
Discussion started by: perl_beginner
5 Replies
10. OS X (Apple)
Hi all...
Apologies for any typos, etc...
This took a while but it didn't beat me...
Although there are many methods of generating random numbers in a POSIX shell this uses integer maths and a simple C source to create an executable to get epoch to microseconds accuracy if it is needed. I take... (8 Replies)
Discussion started by: wisecracker
8 Replies
LEARN ABOUT FREEBSD
rescue
RESCUE(8) BSD System Manager's Manual RESCUE(8)
NAME
rescue -- rescue utilities in /rescue
DESCRIPTION
The /rescue directory contains a collection of common utilities intended for use in recovering a badly damaged system. With the transition
to a dynamically-linked root beginning with FreeBSD 5.2, there is a real possibility that the standard tools in /bin and /sbin may become
non-functional due to a failed upgrade or a disk error. The tools in /rescue are statically linked and should therefore be more resistant to
damage. However, being statically linked, the tools in /rescue are also less functional than the standard utilities. In particular, they do
not have full use of the locale, pam(3), and nsswitch libraries.
If your system fails to boot, and it shows a prompt similar to:
Enter full pathname of shell or RETURN for /bin/sh:
the first thing to try running is the standard shell, /bin/sh. If that fails, try running /rescue/sh, which is the rescue shell. To repair
the system, the root partition must first be remounted read-write. This can be done with the following mount(8) command:
/rescue/mount -uw /
The next step is to double-check the contents of /bin, /sbin, and /usr/lib, possibly mounting a FreeBSD rescue or ``live file system'' CD-ROM
(e.g., disc2 of the officially released FreeBSD ISO images) and copying files from there. Once it is possible to successfully run /bin/sh,
/bin/ls, and other standard utilities, try rebooting back into the standard system.
The /rescue tools are compiled using crunchgen(1), which makes them considerably more compact than the standard utilities. To build a
FreeBSD system where space is critical, /rescue can be used as a replacement for the standard /bin and /sbin directories; simply change /bin
and /sbin to be symbolic links pointing to /rescue. Since /rescue is statically linked, it should also be possible to dispense with much of
/usr/lib in such an environment.
In contrast to its predecessor /stand, /rescue is updated during normal FreeBSD source and binary upgrades.
FILES
/rescue Root of the rescue hierarchy.
SEE ALSO
crunchgen(1), crash(8)
HISTORY
The rescue utilities first appeared in FreeBSD 5.2.
AUTHORS
The rescue system was written by Tim Kientzle <kientzle@FreeBSD.org>, based on ideas taken from NetBSD. This manual page was written by
Simon L. Nielsen <simon@FreeBSD.org>, based on text by Tim Kientzle <kientzle@FreeBSD.org>.
BUGS
Most of the rescue tools work even in a fairly crippled system. The most egregious exception is the rescue version of vi(1), which currently
requires that /usr be mounted so that it can access the termcap(5) files. Hopefully, a failsafe termcap(3) entry will eventually be added
into the ncurses(3) library, so that /rescue/vi can be used even in a system where /usr cannot immediately be mounted. In the meantime, the
rescue version of the ed(1) editor can be used from /rescue/ed if you need to edit files, but cannot mount /usr.
BSD
July 23, 2003 BSD