如何在Shell中为包含特定单词的条目添加后缀并保持原文件排序顺序？

Here's a concise solution that preserves the original order of words from file1 and appends :Checked to any words that appear in file2:

awk '
BEGIN { FS=":" }
NR==FNR { checked[$1] = 1; next }
{
    output = ""
    for (i=1; i<=NF; i++) {
        output = output (output ? " " : "") ($i in checked ? $i ":Checked" : $i)
    }
    print output
}
' file2 file1

How this works: #

1. First, process file2: The NR==FNR condition only runs when we're reading the first input file (file2). We split each line using a colon as the separator, then store the word before the colon in an associative array called checked—this marks which words need the suffix.
2. Then, process file1: For each line in file1, we loop through every word. If the word exists in our checked array, we add :Checked to it; otherwise, we leave it as-is. We build the output string with spaces between words and print the final result.

Example output: #

Given your input files:

• file1: abc def ghi jkl
• file2:

  ghi:Checked
  def:Checked
  

Running the command will output exactly what you want:

abc def:Checked ghi:Checked jkl

This method keeps file1's order intact, works with multiple lines in either file, and handles any number of checked words from file2.

内容的提问来源于stack exchange，提问作者Alex