| ascp4: Transferring from the Command Line with Ascp 4 | 153
Ascp 4 Examples
The command options for ascp4 are generally similar to those for ascp. The following examples demonstrate
options that are unique to Ascp 4. These options enable reading management commands, transfer TCP and UDP data
streams, and enable read/write concurrency.
For Ascp examples, see Ascp Command Reference on page 99 and Ascp Transfers with Object Storage and
HDFS on page 118. See Comparison of Ascp and Ascp 4 Options on page 138 for differences in option
availability and behavior.
• Read FASP4 management commands
Read management commands V4 from management port 5000 and execute the management commands. The
management commands version 4 are PUT, WRITE and CLOSE.
# ascp4 -L /tmp/client-logs -R /tmp/server-logs --faspmgr-io -M 5000
localhost:/tmp
• Streaming
See Ascp 4 Data Streaming Examples on page 156.
• Increase concurrency
The following command runs ascp4 with two scan threads and eight read threads on the client, and eight meta
threads and 16 write threads on the server.
# ascp4 -L /tmp/logs -R /tmp/logs -l1g --scan-threads=2 --read-threads=8
--write-threads=16 --meta-threads=8 /data/100K aspera@10.0.113.53:/data
Built-in I/O Providers
Input/Output providers are library modules that abstract I/O scheme in Ascp 4 architecture. Ascp 4 has the following
built-in I/O providers:
• file (as a simple path or file://path)
• TCP (as tcp://192.168.120.11)
• UDP (as udp://233.3.3.3)
File provider
The local disk can be specified for ascp4 I/O by using a simple path or URL that starts with file. The following
paths identify the same file (/test/ascp4.log) on the disk:
file:////test/ascp4.log
/test/ascp4.log
file://localhost:/test/ascp4.log
Similarly, the following URLs identify the same file (test/ascp4.log) on the disk:
file:///test/ascp4.log
test/ascp4.log
TCP provider
A TCP data stream can be used for ascp4 I/O by specifying a URL that starts with tcp. ascp4 reads TCP data
from the source and writes TCP data on the destination. Use the following format to specify a TCP provider on the
source or destination:
tcp://ip_address:port[?option=value[&option=value]]
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