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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 LINUX

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)
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