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Full Discussion: Create n number of files of size x
Top Forums Shell Programming and Scripting Create n number of files of size x Post 302116275 by cfajohnson on Wednesday 2nd of May 2007 06:24:32 PM
Old 05-02-2007
Quote:
Originally Posted by the_learner
What is the best way to create 'n' number of files of size 'x'

lets say n and x are given as arguments to the program..

and lets say we can simply fill the files with 0s or *'s

Code:
NUM=${1:-10}   ## default to 10 files
SIZE=${2:-666} ## default to 666 bytes
n=0
while [ $n -lt $NUM ]
do
  printf "%0${SIZE}d" 0 > "FILE$n"
  n=$(( $n + 1 ))
done

 

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LEARN ABOUT FREEBSD

shar

SHAR(1) 						    BSD General Commands Manual 						   SHAR(1)

NAME

     shar -- create a shell archive of files

SYNOPSIS

     shar file ...

DESCRIPTION

     The shar command writes a sh(1) shell script to the standard output which will recreate the file hierarchy specified by the command line op-
     erands.  Directories will be recreated and must be specified before the files they contain (the find(1) utility does this correctly).

     The shar command is normally used for distributing files by ftp(1) or mail(1).

EXAMPLES

     To create a shell archive of the program ls(1) and mail it to Rick:

	   cd ls
	   shar `find . -print` | mail -s "ls source" rick

     To recreate the program directory:

	   mkdir ls
	   cd ls
	   ...
	   <delete header lines and examine mailed archive>
	   ...
	   sh archive

SEE ALSO

     compress(1), mail(1), tar(1), uuencode(1)

HISTORY

     The shar command appeared in 4.4BSD.

BUGS

     The shar command makes no provisions for special types of files or files containing magic characters.  The shar command cannot handle files
     without a newline ('
') as the last character.

     It is easy to insert trojan horses into shar files.  It is strongly recommended that all shell archive files be examined before running them
     through sh(1).  Archives produced using this implementation of shar may be easily examined with the command:

	   egrep -v '^[X#]' shar.file

BSD
								   June 6, 1993 							       BSD
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