CODEWITHSUNDEEP
linuxbashshell
Mr. Black
Mr. Black

Reputation: 12122

delete file other than particular extension file format

i have a lot of different type of files in one folder. i need to delete the files but except the pdf file. I tried to display the pdf file only. but i need to delete the other than pdf files

ls -1 | xargs file | grep 'PDF document,' | sed 's/:.*//'

Upvotes: 1

Views: 901

Answers (5)

PhilR
PhilR

Reputation: 5602

It's rare in my experience to encounter PDF files which don't have a .pdf extension. You don't state why "file" is necessary in the example, but I'd write this as:

# find . -not -name '*.pdf' -delete

Note that this will recurse into subdirectories; use "-maxdepth 1" to limit to the current directory only.

Upvotes: 0

Mandar Pande
Mandar Pande

Reputation: 12994

$ ls aa.txt a.pdf bb.cpp b.pdf

$ ls | grep -v .pdf | xargs rm -rf

$ ls a.pdf b.pdf

:) !

Upvotes: 2

Mark Longair
Mark Longair

Reputation: 468191

You could do the following - I've used echo rm instead of rm for safety:

for i in *
do
    [ x"$(file --mime-type -b "$i")" != xapplication/pdf ] && echo rm "$i"
done

The --mime-type -b options to file make the output of file easier to deal with in a script.

Upvotes: 2

Vijay
Vijay

Reputation: 67319

ls |xargs file|awk -F":" '!($2~/PDF document/){print $1}'|xargs rm -rf

Upvotes: 1

samplebias
samplebias

Reputation: 37929

Try inverting the grep match:

ls -1 | xargs file | grep -v 'PDF document,' | sed 's/:.*//'

Upvotes: 0

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