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Full Discussion: problem with spaces in filename
Top Forums Shell Programming and Scripting problem with spaces in filename Post 302527742 by colsinc on Sunday 5th of June 2011 03:40:38 AM
Old 06-05-2011
problem with spaces in filename
I have written a script to run ddrescue on a list of files.

Code:
#!/bin/bash
#
# A script to rescue data recursively using ddrescue.

srcDir=/damaged/hdd/movies/              #the source directory
desDir=/new/hdd/movies/                 #the destination directory
workDir=/new/hdd/movies/ddrescue        #location to store logs and working files

#preamble: I have already run rsync to copy files, but some failed part way through.

`rsync -rvn --size-only $srcDir* $desDir | sed "/speedup/d" | sed "/bytes\/sec/d" | sed "/sending\ incremental/d" | sed "/^$/d" > $workDir/work` #use rsync to generate list of partially transferred files.

workLength=`cat $workDir/work | wc -l`        #Find number of files in list.  For use with incrementing.
bookmark=0                    #Begin at first entry in list.

while [ $bookmark -lt $workLength ]
do
    bookmark=`expr $bookmark + 1`        #increment through the list
    currJob=`cat $workDir/work | sed -n ''$bookmark'p' | sed 's/\ /\\\ /g'`    #extract nth filename from list, replace spaces with "\ "
    echo "Start Rescue on " $currJob >> $workDir/runlog    #

    from=`echo $srcDir$currJob`        #creates full filename for source file,
    to=`echo $desDir$currJob`        #destination file,
    log=`echo $workDir/ddlog-$bookmark`    #and ddrescue log file.
    
    `ddrescue $from $to $log > $workDir/ddoutput-$bookmark` #run ddrescue, dumping output to file.
    cat $workDir/ddoutput-$bookmark | grep -B 2 Finished | grep errors >> $workDir/runlog    #read last 3 lines from ddrescue output and record it in runlog, so user can check which files are missing bits.
    echo -e "\n"
done
exit

My problem is that ddrescue does not like the filenames I am giving it. If the filename has spaces in it it says
Code:
ddrescue: too many files

but if it has no spaces I get
Code:
ddrescue: cannot open input file: No such file or directory

I have tried using "quotes" instead of \'ing every space, but no luck. If I replace the command 'ddrescue' with 'echo', run the script, and then manually copy the given filenames into ddrescue in another terminal it works fine. But this rather defeats the purpose..

I have only been learning scripting for a little while, so I feel like I must be missing something obvious, I just can't figure out what!
 

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LEARN ABOUT NETBSD

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 NetBSD 2.0, 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 an error message similar to:

	   init: not found

     try booting the system with the boot flag ``-a'' and supplying /rescue/init, which is the rescue init(8), as the init path.

     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, /lib, /libexec, and /sbin, possibly mounting a NetBSD installation CD-ROM 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 stan-
     dard system.

     The /rescue tools are compiled using crunchgen(1), which makes them considerably more compact than the standard utilities.

FILES

     /rescue  Root of the rescue hierarchy.

SEE ALSO

     crunchgen(1)

HISTORY

     The rescue utilities first appeared in NetBSD 2.0.

AUTHORS

     The rescue system was written by Luke Mewburn <lukem@NetBSD.org>.	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 curses(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
								 January 20, 2009							       BSD
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