You can copy your main source physical file to an Integrated File System (IFS) file. Assuming that you used a standard name for your source physical file, use the following command:
CPYTOSTMF FROMMBR('/QSYS.LIB/MYLIB.LIB/QCSRC.FILE/QCSRC.MBR') TOSTMF('/home/qcsrc.c')
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