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Top Forums Shell Programming and Scripting Need to generate a file with random data. /dev/[u]random doesn't exist. Post 302844167 by Corona688 on Friday 16th of August 2013 06:08:32 PM
Old 08-16-2013
What system doesn't have /dev/urandom? What languages do you have available?

How about this? When dd quits, it should kill the while-loop too. No named pipe needed.

Code:
while true
do
        cat inputfile
done | dd bs=1024 count=1024 > outputfile

 

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MKERRLST(1)						      General Commands Manual						       MKERRLST(1)

NAME
mkerrlst - create system error file SYNOPSIS
mkerrlst [ -i inputfile ] [ -o outputfile ] DESCRIPTION
Mkerrlst(1) creates error message files in the format described by syserrlst(5). With no arguments mkerrlst creates the file /etc/syserrlst from the internal array sys_errlist. Give just the -o option mkerrlst will create the file outputfile from the internal array sys_errlist. Given just the -i option mkerrlst will create the file /etc/syserrlst from the input file inputfile. Given both -i and -o options mkerrlst will create the error message file outputfile from the strings contained in inputfile. NOTE: error messages are numbered from 0. If the error 0 does not have a message associated with it the first string in inputfile must still be present. RETURN VALUE
mkerrlst exits with status of 0 if no errors are encountered. If errors do occur an error message is printed on stderr and the exit status is 1. ERRORS
mkerrlst(1) can encounter any of the errors for the open(2), lseek(2), read(2), or write(2) system calls. SEE ALSO
syserrlst(3) syserrlst(5) HISTORY
mkerrlst(1), first appeared in 2.11BSD. BUGS
Error messages can be a maximum of 80 characters. 3rd Berkeley Distribution March 14, 1996 MKERRLST(1)
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