Shell 把连续多个变成单个空格

正常情况

[root@6A84935A18948CFB block]# cat /sys/block/sda/stat
 3758907     4275 108729115  1307625  3883092   400210 101613393  6526928        0  2844355  5860981        0        0        0        0

使用 awk 去除多余空格

cat /sys/block/sda/stat | awk '{$1=$1;print}' 
3756794 4251 108640459 1306792 3882578 400026 101600391 6526174 0 2843001 5860024 0 0 0 0

解析为 JSON 数组

cat /sys/block/sda/stat | awk '{$1=$1;print}' | xargs -I{} echo '"{}"' |  jq 'split(" ")'
[
  "3759352",
  "4275",
  "108744563",
  "1307823",
  "3884720",
  "400364",
  "101641859",
  "6528584",
  "0",
  "2845230",
  "5862519",
  "0",
  "0",
  "0",
  "0"
]