grep -l 和 grep -ln
根据 grep 手册，
-l, --files-with-matches
Suppress normal output; instead print the name of each input
file from which output would normally have been printed. The
scanning will stop on the first match.
grep -l，这似乎很好，因为当找到匹配项时，会回显包含匹配项的文件名。
但是，当我执行 grep -ln 时，grep 会回显出现的每一行。
grep -l 是否真的意味着在找到第一次匹配时停止并停止扫描，而 grep -ln 会忽略 -l > 旗帜？
according to the manual for grep,
-l, --files-with-matches
Suppress normal output; instead print the name of each input
file from which output would normally have been printed. The
scanning will stop on the first match.
grep -l, this seems fine in that when a match is found, the file name containing the match is echoed.
However when i do a grep -ln, grep echoes every line of the occurrence.
Does grep -l really mean to stop when the first occurrence of the match is found and stop scanning, while grep -ln will ignore the -l flag?
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这些选项是不兼容的。如果要显示每个文件中第一个匹配项（并且仅第一个匹配项）的行号，请使用 grep -Hnm 1 。
Those options are incompatible. Use
grep -Hnm 1if you want to display the line number of the first match (and only the first match) in each file.