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md5sum on a file with backslash in its name

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# 8  
Old 04-30-2012
Documented "feature" of GNU md5sums:

Quote:
If file contains a backslash or newline, the line is started with a backslash, and each problematic character in the file name is escaped with a backslash, making the output unambiguous even in the presence of arbitrary file names. If file is omitted or specified as ‘-', standard input is read.
not every one will do this:
Code:
$ busybox md5sum $'weird\nfile' test.ifs
d41d8cd98f00b204e9800998ecf8427e  weird
file
a1b7ff94b09092927c0cd0c59c94bd1e  test.ifs

So if creating an md5sum file to later check, this is OK, if you want md5sum of file for something else, redirection saves a cat.. sum=$(md5sum < "$file" | cut)
# 9  
Old 05-01-2012
Thanks neutronscott,
I missed that explanation.
And thanks for
Code:
md5sum < "$file"

which is more concise than
Code:
cat "$file" | md5sum
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