How to solve 'ascp: "user#host:" in all sources must match' when download SRA data with linux? - linux

Question

I'm running the command -ascp -v -i ~/.aspera/connect/etc/asperaweb_id_dsa.openssh -k 1 -T -l200m anonftp#ftp-private.ncbi.nlm.nih.gov:/sra/sra-instant/reads/ByRun/sra/SRR/SRR590/SRR5907429 /SRR5907429 .sra ~/sra_download with Linux
and I get this error -
"user#host:" in all sources must match
What does this mean?How to solve it?

Answer 1

First,"-private"should be removed.Secondly,need to correct the space error in the sentence，example "SRR5907429 ".'ascp -v -i ~/.aspera/connect/etc/asperaweb_id_dsa.openssh -k 1 -T -l200m anonftp#ftp.ncbi.nlm.nih.gov:/sra/sra-instant/reads/ByRun/sra/SRR/SRR590/SRR5907429/SRR5907429.sra ~/sra_download'is the correct answer we need.enter image description here

Answer 2

Your problem:
the ascp syntax is:
Usage: ascp [OPTION] SRC... DEST
SRC to DEST, or multiple SRC to DEST dir
SRC, DEST format: [[user#]host:]PATH
Display full usage: -h,--help
You get this by simply executing ascp, get more with "ascp -h" and have a manual for it as well, or https://download.asperasoft.com/download/docs/entsrv/3.9.1/es_admin_linux/webhelp/index.html#dita/ascp_2.html
it is pretty much like "scp", but works also in "pull" mode.
so, you have:
options then one or multiple sources, then a single destination (always the last argument).
if the destination is: user#server:folder, then you do a push
if source is user#server:folder, then you do a pull
globally, you can only do a push or a pull at the same time. but there can be multiple sources, and always a single destination (on command line).
in you case you have:
options: -v -i ~/.aspera/connect/etc/asperaweb_id_dsa.openssh -k 1 -T -l200m
sources: anonftp#ftp-private.ncbi.nlm.nih.gov:/sra/sra-instant/reads/ByRun/sra/SRR/SRR590/SRR5907429 /SRR5907429 .sra
destination:~/sra_download
the first source is: anonftp#ftp-private.ncbi.nlm.nih.gov:/sra/sra-instant/reads/ByRun/sra/SRR/SRR590/SRR5907429
the other sources are: /SRR5907429 .sra
so you specify one remote source, two local sources, and one local destination.
This is the error you get.
My advice:
do not use the legacy syntax, as you did, but instead, use the advanced syntax:
ascp [options] --mode=<send|recv> --user=<user> --host=<server> sources... destination
There are plenty of options, for instance, if all your source files are in the same folder, you can use: --source-prefix=
you can also use file list file (i.e. a file that contains the list of files you want to transfer, in case it is long and generated by a script) or even file par list file.
Note also, that there is an interesting front end for aspera command line transfers:
https://www.rubydoc.info/gems/asperalm