1. Creates (or updates) a zip archive with all files in the source directory and deletes files after successful archiving
7za.exe a -bd -sdel d:\output.zip d:\imagesToZip\*
2. Creates an archive of all log files
7za.exe a -r d:\logs.zip d:\logs\*.log
3. Uses 7z format. Compression is incremental and only updates are compressed. Also flags deleted archived files to be removed from filesystem upon extraction. https://superuser.com/a/591539/326177
7za.exe u -up0q3r2x2y2z1w2 d:\archive.7z d:\myProject
4. Calculates CRC32, CRC64, SHA56, SHA1, XXH64 hex hashes for all files within a sub-directory path.
7za.exe h -scrc* d:\downloads\*.* -r
Try it
List archive contents
Run '7za l' against the shared sample.zip to display every entry's name, size, packed size, and modified date. The archive contains the iris.csv, users.json, bookstore.xml, sample.sql, sample.md, sample.html, and lorem.txt fixtures.
Test archive integrity
Run '7za t' to verify CRCs and headers without extracting. Useful for nightly integrity sweeps over a backup directory.
# 7-Zip - Help
Source: https://www.7-zip.org/
```
7-Zip (a) 25.01 (x64) : Copyright (c) 1999-2025 Igor Pavlov : 2025-08-03
Usage: 7za <command> [<switches>...] <archive_name> [<file_names>...] [@listfile]
<Commands>
a : Add files to archive
b : Benchmark
d : Delete files from archive
e : Extract files from archive (without using directory names)
h : Calculate hash values for files
i : Show information about supported formats
l : List contents of archive
rn : Rename files in archive
t : Test integrity of archive
u : Update files to archive
x : eXtract files with full paths
<Switches>
-- : Stop switches and @listfile parsing
-ai[r[-|0]][m[-|2]][w[-]]{@listfile|!wildcard} : Include archives
-ax[r[-|0]][m[-|2]][w[-]]{@listfile|!wildcard} : eXclude archives
-ao{a|s|t|u} : set Overwrite mode
-an : disable archive_name field
-bb[0-3] : set output log level
-bd : disable progress indicator
-bs{o|e|p}{0|1|2} : set output stream for output/error/progress line
-bt : show execution time statistics
-i[r[-|0]][m[-|2]][w[-]]{@listfile|!wildcard} : Include filenames
-m{Parameters} : set compression Method
-mmt[N] : set number of CPU threads
-mx[N] : set compression level: -mx1 (fastest) ... -mx9 (ultra)
-o{Directory} : set Output directory
-p{Password} : set Password
-r[-|0] : Recurse subdirectories for name search
-sa{a|e|s} : set Archive name mode
-scc{UTF-8|WIN|DOS} : set charset for console input/output
-scs{UTF-8|UTF-16LE|UTF-16BE|WIN|DOS|{id}} : set charset for list files
-scrc[CRC32|CRC64|SHA256|SHA1|XXH64|*] : set hash function for x, e, h commands
-sdel : delete files after compression
-seml[.] : send archive by email
-sfx[{name}] : Create SFX archive
-si[{name}] : read data from stdin
-slp : set Large Pages mode
-slt : show technical information for l (List) command
-snh : store hard links as links
-snl : store symbolic links as links
-sni : store NT security information
-sns[-] : store NTFS alternate streams
-so : write data to stdout
-spd : disable wildcard matching for file names
-spe : eliminate duplication of root folder for extract command
-spf[2] : use fully qualified file paths
-ssc[-] : set sensitive case mode
-sse : stop archive creating, if it can't open some input file
-ssp : do not change Last Access Time of source files while archiving
-ssw : compress shared files
-stl : set archive timestamp from the most recently modified file
-stm{HexMask} : set CPU thread affinity mask (hexadecimal number)
-stx{Type} : exclude archive type
-t{Type} : Set type of archive
-u[-][p#][q#][r#][x#][y#][z#][!newArchiveName] : Update options
-v{Size}[b|k|m|g] : Create volumes
-w[{path}] : assign Work directory. Empty path means a temporary directory
-x[r[-|0]][m[-|2]][w[-]]{@listfile|!wildcard} : eXclude filenames
-y : assume Yes on all queries
```
