[英]Check if all lines from one file are present somewhere in another file
I used file1
as a source of data for file2
and now I need to make sure that every single line of text from file1
occurs somewhere in file2
(and find out which lines are missing, if any). 我使用
file1
作为file2
的数据源,现在我需要确保file1
中的每一行文本都出现在file2
某个地方 (并找出哪些行丢失,如果有的话)。 It's probably important to note that while file1
has conveniently one search term per line, the terms can occur anywhere in the file2
including in the middle of a word. 值得注意的是,虽然
file1
每行有一个搜索项,但这些术语可以出现在file2
任何地方 ,包括在单词的中间。 Also would help if the matching was case insensitive - doesn't matter if the text in file2
is even in all caps as long as it's there. 如果匹配不区分大小写也会有所帮助 - 如果
file2
的文本甚至是全部大写,则无关紧要,只要它在那里。
The lines in file1
include spaces and all sorts of other special characters like --
. file1
的行包括空格和各种其他特殊字符,如--
。
if grep -Fqvf file2 file1; then
echo $"There are lines in file1 that don’t occur in file2."
fi
Grep options mean: Grep选项意味着:
-F, --fixed-strings PATTERN is a set of newline-separated fixed strings
-f, --file=FILE obtain PATTERN from FILE
-v, --invert-match select non-matching lines
-q, --quiet, --silent suppress all normal output
You can try 你可以试试
awk -f a.awk file1 file2
where a.awk
is a.awk
在哪里
BEGIN { IGNORECASE=1 }
NR==FNR {
a[$0]++
next
}
{
for (i in a)
if (index($0,i))
delete a[i]
}
END {
for (i in a)
print i
}
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