This is the command edfcat that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
edfcat -- EDF file channel mixer/converter.
edfcat OPERATION OPERANDS
edfcat is a tool to manipulate EDF file channels. Currently, two operations are
supported: (1) ascii->edf conversion (multichannel conversion restricted to channels with
identical samplerate), and (2) channel pruning.
conv FILE.ascii SAMPLERATE RECORD_SIZE
Convert samples in FILE.ascii into FILE.ascii.edf. Multiple columns in the source
file will be converted as individual channels.
On success, physical_min/max in each channel will be set to the absolute min/max of
all channel data, widened symmetrically to whichever boundary is farther from 0
(thus, a range of -2:3 becomes -3:3, as will -3:2).
prune FILE.edf N1[,N2,...]
Create a copy of source file (FILE-mod.edf) only keeping channels N1,N2,...
Use edfcat online using onworks.net services