With rabin2, generated symbols list format is similar to imports list. Use -s option to get it:
$ rabin2 -s /bin/ls | head
[Symbols]
addr=0x0021a610 off=0x0021a610 ord=114 fwd=NONE sz=8 bind=GLOBAL type=OBJECT name=stdout
addr=0x0021a600 off=0x0021a600 ord=115 fwd=NONE sz=0 bind=GLOBAL type=NOTYPE name=_edata
addr=0x0021b388 off=0x0021b388 ord=116 fwd=NONE sz=0 bind=GLOBAL type=NOTYPE name=_end
addr=0x0021a600 off=0x0021a600 ord=117 fwd=NONE sz=8 bind=GLOBAL type=OBJECT name=__progname
addr=0x0021a630 off=0x0021a630 ord=119 fwd=NONE sz=8 bind=UNKNOWN type=OBJECT name=program_invocation_name
addr=0x0021a600 off=0x0021a600 ord=121 fwd=NONE sz=0 bind=GLOBAL type=NOTYPE name=__bss_start
addr=0x0021a630 off=0x0021a630 ord=122 fwd=NONE sz=8 bind=GLOBAL type=OBJECT name=__progname_full
addr=0x0021a600 off=0x0021a600 ord=123 fwd=NONE sz=8 bind=UNKNOWN type=OBJECT name=program_invocation_short_name
addr=0x00002178 off=0x00002178 ord=124 fwd=NONE sz=0 bind=GLOBAL type=FUNC name=_init
With -sr option rabin2 produces a radare2 script instead. It can be later passed to the core to automatically flag all symbols and to define corresponding byte ranges as functions and data blocks.
$ rabin2 -sr /bin/ls
fs symbols
Cd 8 @ 0x0021a610
f sym.stdout 8 0x0021a610
f sym._edata 0 0x0021a600
f sym._end 0 0x0021b388
Cd 8 @ 0x0021a600
f sym.__progname 8 0x0021a600
Cd 8 @ 0x0021a630
f sym.program_invocation_name 8 0x0021a630
f sym.__bss_start 0 0x0021a600