Software: Apache/2.2.16 (Debian). PHP/5.3.3-7+squeeze19 

uname -a: Linux mail.tri-specialutilitydistrict.com 2.6.32-5-amd64 #1 SMP Tue May 13 16:34:35 UTC
2014 x86_64 

uid=33(www-data) gid=33(www-data) groups=33(www-data) 

Safe-mode: OFF (not secure)

/usr/share/doc/p7zip-full/DOCS/MANUAL/switches/   drwxr-xr-x
Free 129.75 GB of 142.11 GB (91.3%)
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Viewing file:     password.htm (1.24 KB)      -rw-r--r--

-p (set Password) switch

Specifies password.

Syntax

-p{password}

{password}

Specifies password.

Examples

7z a archive.7z -psecret -mhe *.txt

compresses *.txt files to archive.7z using password "secret". Also it encrypts archive headers (-mhe switch), so filenames will be encrypted.

7z x archive.zip -psecret

extracts all files from archive.zip using password "secret".

Commands that can be used with this switch

a (Add), d (Delete), e (Extract), t (Test), u (Update), x (Extract with full paths)