awk打印所需的字段数

它打印字段3和从5开始直到结束的字段,而字段由空格分隔.

使用awk,它在多行版本中更加冗长和最佳解释:

script.awk

# on every line
{
    # print field 3
    printf "%s", $3

    # iterate from 5 to number of fields ...
    for(i=5;i<=NF;i++) 
        # ... and print them 
        printf " %s", $i

    # print newline at the end
    printf "\n"
}

像这样称呼它:

awk -f script.awk jboss.log