linux - How to make a list of files that don't exist from a list of files -

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i have text file a.txt contains list of files:

photo/a.jpg photo/b.jpg photo/c.jpg etc

i want list of files don't exist.

you can use:

xargs -i % bash -c '[[ ! -e $1 ]] && echo "$1"' _ % < a.txt > b.txt

xargs run bash -c each line in a.txt. [[ ! -e $1 ]] check non-presence of each entry.


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