Ага работает, вот только не пойму что обозначают цифры 1252718876.wav, дата у меня верно стоит.
[/home/user/wav]# arecord -d 1 -f cd -t wav copy /home/user/wav/`date +%s`.wav
Recording WAVE 'copy' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Recording WAVE '/home/user/wav/1252718876.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[/home/user/wav]# arecord -d 1 -f cd -t wav copy /home/user/wav/`date +%s`.wav
Recording WAVE 'copy' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Recording WAVE '/home/user/wav/1252718884.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[/home/user/wav]# arecord -d 1 -f cd -t wav copy /home/user/wav/`date +%s`.wav
Recording WAVE 'copy' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Recording WAVE '/home/user/wav/1252718893.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[/home/user/wav]# arecord -d 1 -f cd -t wav copy /home/user/wav/`date +%s`.wav
Recording WAVE 'copy' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Recording WAVE '/home/user/wav/1252718897.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
[/home/user/wav]# ls
1252718876.wav 1252718884.wav 1252718893.wav 1252718897.wav copy
[/home/user/wav]# ls -l
total 900
-rw-r--r-- 1 root root 176444 2009-09-11 18:27 1252718876.wav
-rw-r--r-- 1 root root 176444 2009-09-11 18:28 1252718884.wav
-rw-r--r-- 1 root root 176444 2009-09-11 18:28 1252718893.wav
-rw-r--r-- 1 root root 176444 2009-09-11 18:28 1252718897.wav
-rw-r--r-- 1 root root 176444 2009-09-11 18:28 copy
[/home/user/wav]#