-bash-3.00$ perl -le 'print for(1...100)'>foo.txt -bash-3.00$ dd if=foo.txt of=bar1.txt bs=1024k count=10 0+1 records in 0+1 records out -bash-3.00$ dd if=foo.txt bs=1024k count=10>bar2.txt 0+1 records in 0+1 records out -bash-3.00$ dd if=foo.txt bs=1024k count=10|gzip -c>bar3.txt.gz 0+1 records in 0+1 records out -bash-3.00$ gunzip bar3.txt.gz -bash-3.00$ diff foo.txt bar1.txt -bash-3.00$ diff foo.txt bar2.txt -bash-3.00$ diff foo.txt bar3.txt -bash-3.00$ ls -l *.txt -rw-r--r-- 1 oracle oinstall 292 Apr 14 16:01 bar1.txt -rw-r--r-- 1 oracle oinstall 292 Apr 14 16:01 bar2.txt -rw-r--r-- 1 oracle oinstall 292 Apr 14 16:02 bar3.txt -rw-r--r-- 1 oracle oinstall 292 Apr 14 16:00 foo.txt -bash-3.00$ head -3 bar3.txt 1 2 3 -bash-3.00$ tail -3 bar3.txt 98 99 100
of をつけなければ標準出力に出力されるんですね。
