.nh
.TH "desync" "1" "Sep 2026" "desync" ""

.SH NAME
desync-chop - Read chunks from a file according to an index


.SH SYNOPSIS
\fBdesync chop <index> <file> [flags]\fP


.SH DESCRIPTION
Reads the index and extracts all referenced chunks from the file into a store,
local or remote.

.PP
Does not modify the input file or index in any way. It's used to populate a chunk
store by chopping up a file according to an existing index. To exclude chunks that
are known to exist in the target store already, use --ignore <index> which will
skip any chunks from the given index. The same can be achieved by providing the
chunks in their ASCII representation in a text file with --ignore-chunks <file>.

.PP
Use '-' to read the index from STDIN.


.SH OPTIONS
\fB--ca-cert\fP=""
	trust authorities in this file, instead of OS trust store

.PP
\fB-r\fP, \fB--cache-repair\fP[=true]
	replace invalid chunks in the cache from source

.PP
\fB--client-cert\fP=""
	path to client certificate for TLS authentication

.PP
\fB--client-key\fP=""
	path to client key for TLS authentication

.PP
\fB-n\fP, \fB--concurrency\fP=10
	number of concurrent goroutines

.PP
\fB-e\fP, \fB--error-retry\fP=3
	number of times to retry in case of network error

.PP
\fB-b\fP, \fB--error-retry-base-interval\fP=500ms
	initial retry delay, increases linearly with each subsequent attempt

.PP
\fB-h\fP, \fB--help\fP[=false]
	help for chop

.PP
\fB--ignore\fP=[]
	index(es) with chunks to be excluded

.PP
\fB--ignore-chunks\fP=[]
	text file with chunk IDs to be excluded

.PP
\fB-s\fP, \fB--store\fP=""
	target store

.PP
\fB-t\fP, \fB--trust-insecure\fP[=false]
	trust invalid certificates


.SH OPTIONS INHERITED FROM PARENT COMMANDS
\fB--config\fP=""
	config file (default $HOME/.config/desync/config.json)

.PP
\fB--digest\fP="sha512-256"
	digest algorithm, sha512-256 or sha256

.PP
\fB--verbose\fP[=false]
	verbose mode


.SH EXAMPLE
.EX
  desync chop -s sftp://192.168.1.1/store file.caibx largefile.bin
.EE


.SH SEE ALSO
\fBdesync(1)\fP


.SH HISTORY
5-Sep-2026 Auto generated by spf13/cobra