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Top Forums UNIX for Dummies Questions & Answers passwd -S on linux- what are the fields? Post 302611273 by Anne Neville on Thursday 22nd of March 2012 01:34:21 PM
Old 03-22-2012
passwd -S on linux- what are the fields?

I'm looking for some documentation on what the different fields mean in the output of passwd -S username:

passwd -S foo
foo PS 2012-03-20 0 70 3 -1 (Password set, MD5 crypt.)

I think the date given is the date of the last password change, the 0 after that is the minimum password age, and the 49 after that is the maximum password age. But I can't find any documentation to confirm this. I'd also like to know what the stuff that appears in the other fields means.

The man page says "This will output a short information about the status of the password for a given account. Available to root user only.", which is, shall we say, less than helpful.
 

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passwd(1openssl)						      OpenSSL							  passwd(1openssl)

NAME
passwd - compute password hashes SYNOPSIS
openssl passwd [-crypt] [-1] [-apr1] [-salt string] [-in file] [-stdin] [-noverify] [-quiet] [-table] {password} DESCRIPTION
The passwd command computes the hash of a password typed at run-time or the hash of each password in a list. The password list is taken from the named file for option -in file, from stdin for option -stdin, or from the command line, or from the terminal otherwise. The Unix standard algorithm crypt and the MD5-based BSD password algorithm 1 and its Apache variant apr1 are available. OPTIONS
-crypt Use the crypt algorithm (default). -1 Use the MD5 based BSD password algorithm 1. -apr1 Use the apr1 algorithm (Apache variant of the BSD algorithm). -salt string Use the specified salt. When reading a password from the terminal, this implies -noverify. -in file Read passwords from file. -stdin Read passwords from stdin. -noverify Don't verify when reading a password from the terminal. -quiet Don't output warnings when passwords given at the command line are truncated. -table In the output list, prepend the cleartext password and a TAB character to each password hash. EXAMPLES
openssl passwd -crypt -salt xx password prints xxj31ZMTZzkVA. openssl passwd -1 -salt xxxxxxxx password prints $1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.. openssl passwd -apr1 -salt xxxxxxxx password prints $apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0. OpenSSL-0.9.8 Oct 11 2005 passwd(1openssl)
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