You can use the -so option to write the data to stdout and redirect to your target file:
Example:
7z e -so xxxx.7z > yyy.txt The commandline help of version 9.22 beta:
7-Zip [64] 9.22 beta Copyright (c) 1999-2011 Igor Pavlov 2011-04-18 Usage: 7z <command> [<switches>...] <archive_name> [<file_names>...] [<@listfiles...>] <Commands> a: Add files to archive b: Benchmark d: Delete files from archive e: Extract files from archive (without using directory names) l: List contents of archive t: Test integrity of archive u: Update files to archive x: eXtract files with full paths <Switches> -ai[r[-|0]]{@listfile|!wildcard}: Include archives -ax[r[-|0]]{@listfile|!wildcard}: eXclude archives -bd: Disable percentage indicator -i[r[-|0]]{@listfile|!wildcard}: Include filenames -m: set compression Method -o: set Output directory -p: set Password -r[-|0]: Recurse subdirectories -scs: set charset for list files -sfx[]: Create SFX archive -si[]: read data from stdin -slt: show technical information for l (List) command -so: write data to stdout -ssc[-]: set sensitive case mode -ssw: compress shared files -t: Set type of archive -u[-][p#][q#][r#][x#][y#][z#][!newArchiveName]: Update options -v[b|k|m|g]: Create volumes -w[]: assign Work directory. Empty path means a temporary directory -x[r[-|0]]]{@listfile|!wildcard}: eXclude filenames -y: assume Yes on all queries More recent alpha versions (9.30) also do not allow to specify a target filename as direct parameter without redirection.