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Full Discussion: Recursively hard linking files -- bonehead question
Top Forums Shell Programming and Scripting Recursively hard linking files -- bonehead question Post 302256266 by scyphers on Sunday 9th of November 2008 12:10:33 AM
Old 11-09-2008
Question Recursively hard linking files -- bonehead question
I used to program ksh a while back, but I've been off in Oracle/Windows land (for clients -- not by choice) for so long that I can't remember what should be an easy thing. Here's the scenario:

1)Find all files and directories beneath some directory point (A).
2)If directory, make the subdirectory at some different directory point (B)
3)If file, link (not symbolic) the file in the correct subdirectory under point B.

For a more concrete example, here's a scenario.

Point A: /usr/test
Point B: /var/test

File structures:
/usr/test
/usr/test/oracle
/usr/test/oracle/script 1
/usr/test/oracle/script 2
/usr/test/db2
/usr/test/db2/script 1
/usr/test/db2/script 2

I'm trying to write a script that will result in the following output (and/or actually do the work instead of writing an output script, but I can live with creating a secondary script):

mkdir /var/test/oracle
ln /usr/test/oracle/"script 1" /var/test/oracle/"script 1"
ln /usr/test/oracle/"script 2" /var/test/oracle/"script 2"
mkdir /var/test/db2
ln /usr/test/db2/"script 1" /var/test/db2/"script 1"
ln /usr/test/db2/"script 2" /var/test/db2/"script 2"

Here's the pseudo code for what I've been working on so far:

#!/bin/bash

#declare variables
cnt=0 #array counter
# &1 == Source Directory
# &2 == Target Directory
source_len=awk '{ print length }'

# Find out what the subdirectories are
full_list=find $1 -print 2>/dev/null

## Populate the subdirectories into an array
## Trim the root from the subdirectories into a second array
subdir = full_list| cut -c source_len-

# Loop through, creating them one at a time.
if [-d full_list]
then
# make the new directory
echo "mkdir $target/$subdir"
elif [-f source]
then
# link the file
echo "ln $full_list $target/$subdir"
fi

Someone suggested to me mounting /usr/test to /var/test, but that doesn't completely satisfy the necessary requirements (and would result in a few thousand mount points being scattered through the environment -- not a pretty picture)...

if this was PL/SQL, it would have taken me about 15 seconds to write, but I'm rusty on bash scripting. Any thoughts?

--CS
 

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LEARN ABOUT DEBIAN

mfontset_lookup

mfontset_lookup(3m17n)						 The m17n Library					    mfontset_lookup(3m17n)

NAME

       mfontset_lookup - Lookup a fontset.

SYNOPSIS

       MPlist * mfontset_lookup (MFontset * fontset, MSymbol script, MSymbol language, MSymbol charset)

DESCRIPTION

       Lookup a fontset. The mfontset_lookup() function lookups fontset and returns a plist that describes the contents of fontset corresponding
       to the specified script, language, and charset.

       If script is Mt, keys of the returned plist are script name symbols for which some fonts are specified and values are NULL.

       If script is a script name symbol, the returned plist is decided by language.

       o If language is Mt, keys of the plist are language name symbols for which some fonts are specified and values are NULL. A key may be Mt
	 which means some fallback fonts are specified for the script.
       o If language is a language name symbol, the plist is a FONT-GROUP for the specified script and language.  FONT-GROUP is a plist whose keys
	 are FLT (FontLayoutTable) name symbols (Mt if no FLT is associated with the font) and values are pointers to MFont.
       o If language is Mnil, the plist is fallback FONT-GROUP for the script.
       If script is Mnil, the returned plist is decided as below.
       o If charset is Mt, keys of the returned plist are charset name symbols for which some fonts are specified and values are NULL.
       o If charset is a charset name symbol, the plist is a FONT-GROUP for the charset.
       o If charset is Mnil, the plist is a fallback FONT-GROUP.
RETURN VALUE

	   It returns a plist describing the contents of a fontset. The plist should be freed by m17n_object_unref().
COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
       <http://www.gnu.org/licenses/fdl.html>.

Version 1.6.2							    12 Jan 2011 					    mfontset_lookup(3m17n)
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