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I have directory of recording with

foo - bar-202009.opus
unix - tilde-2020se.opus
stack - exchange-29328f.opus

I trying to set meta from file name for foo - bar.202009.opus (there are some inconsistency with - so easy way is scrapping -<6digitchars>.opus)

song title = foo - bar

Using sed to scrap,

$ ls | sed 's/-[a-zA-Z0-9]*\w//g; s/.opus//g'

foo - bar
unix - tilde
stack - exchange

I use id3tag to set, synatx

id3tag --song=[tilte] [file]

I have all those in directory, so iterating with while & read,

ls | while read x; \
    do id3tag \
    $(echo \
    --song=\"$(echo $x | sed 's/-[a-zA-Z0-9]*\w//g; s/.opus//g')\"  \
    \"${x}\"
    ); \
    done

problem with above is, the spaces in input file causes id3 to interpret as another file (even when enclosed with \"${x}\")

so output right now,

foo
'bar"'
'"bar-202009.opus"'
.
.

Is there a way for i3dtag to see file with spaces as a single file.

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2 Answers 2

Reset to default
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Avoiding ls parse, one-liner.

#!/bin/sh

for file in *; do
    scrap="$(echo $file | sed 's/-[a-zA-Z0-9]*\w//g; s/.opus//g')"
    id3tag --song="${scrap}" "${f}"
done
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I suggest that you not try to make it a one-liner:

ls | while read x; do
    x="$(echo $x | sed 's/-[a-zA-Z0-9]*\w//g; s/.opus//g')"
    id3tag --song="${x}"
done

The point annahri made about not parsing ls output is a good one, so you could instead do

for x in *.opus; do
 .... the rest is the same

With this approach, there are fewer places for the quotes to get consumed by a sub-shell or for the quotes to be passed as a literal to id3tag.

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  • This is more of a comment than an answer, doesn't solve my problem of passing input to id3tag Commented Sep 20, 2020 at 19:10
  • @Hisacro I notice that your answer is almost identical to this in terms of breaking the one-liner into multiple calls and doing the parsing before invoking id3tag. I'm glad you found it useful. Commented Sep 20, 2020 at 21:01
  • thought it's identical, there's no way(?) to parse second argument "${file_input}" to i3tags (spaces always break as new file guess that's how the ls works). If you have figured with ls I'll accept your answer without regrets. Commented Sep 21, 2020 at 12:46
  • if you think about it, whole script is pointless without file input (ie. second argument) Commented Sep 21, 2020 at 12:55
  • @Hisacro point taken, I didn't notice the second parameter in your original post. Commented Sep 21, 2020 at 21:43

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