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POShell script while read loop executes only once
 

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    <p>I am writing a shell script to batch process .mov files off my camera through <a href="https://trac.handbrake.fr/wiki/CLIGuide" rel="nofollow noreferrer">Handbrake</a> to save HD space. The script searches a directory with 'find' and then runs Handbrake on each .mov file found, matching the creation date of the resulting file to the source file's date with 'touch'.</p> <p>I originally did this with a <strong>for</strong> loop:</p> <pre><code>for i in $(find "$*" -iname '*.mov') ; do ~/Unix/HandbrakeCLI --input "$i" --output "$i".mp4 --preset="Normal" touch -r "$i" "$i".mp4 done </code></pre> <p>This worked, but failed if the input files had spaces in their file names. So I tried a <strong>while</strong> loop instead:</p> <pre><code>find "$*" -iname '*.mov' | while read i ; do ~/Unix/HandbrakeCLI --input "$i" --output "$i".mp4 --preset="Normal" touch -r "$i" "$i".mp4 done </code></pre> <p>The problem with this loop is that it works for the first file in the directory, and then exits the loop. Note that if I substitute an "echo $i" in the body of the while loop, it prints all of the .mov files in the directory, so the loop is structured correctly.</p> <p>I believe there is a partial answer to my question on <a href="https://stackoverflow.com/questions/2627838/why-does-bash-loop-deploy-script-only-seem-to-work-once">this stackoverflow thread</a>. But the solution is specific to ssh and doesn't solve the general problem. Seems to have something do do with stdin being used by a sub-process, but I don't exactly understand how this works.</p> <p>Any advice?</p> <p>I'm on OSX 10.6</p>
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    1. CO`${SHELL}` == `'/bin/bash'`, one presumes?
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    2. COYes, I'm using bash.
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    3. COThis can't be answered without knowing what $* is supposed to be. Is it supposed to be a list of files or directories? Or the current directory? Looks very much like you just use the wrong `file` argument with the wrong shell special parameter (e.g. use `file "$@"` instead of `"$*"`).
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