我比较了两个文件 file1 和 file2 使用diff -y. 当我wc -l在 diff 文件上执行时，我得到了 66000 的值。以前我已经将相同的 file1 和 file2 连接到其他东西上并执行wc -l了它。我得到了大约 84000 行作为计数。
当我wc -l对差异文件和连接文件执行 a 时，行数不应该相同吗？我在 diff 文件中遗漏了什么吗？
我还计算了两个文件之间有多少内容不同，有多少是相同的，有多少只存在于一个与另一个中，然后将它们总结起来，总共有 66000 个。
当我连接时，我做到了
sort | uniq | wc -l
当我区分它时，我只是做了一个
wc -l
但是，这些文件已经是sorted 和uniqed 差异的文件。无法弄清楚我错过了什么！
由于显示“更改”和“移动”行的方式，显示的行数可能与您描述的通过合并原始文件并通过 sort 和 uniq(ue) 过滤显示的diff -y行数没有关系diff -y.
这里我们有 2 个已排序的文件，分别为 20 行和 19 行。2 个文件的 sort+uniq 加起来显示 32 行，而 diff 只显示 20 行：
| file1+2 |
| sort | diff -y -W 12
file1| file2 | uniq | file1 file2
-----|-------|---------|---------------
act act act act act
all all all all all
and and and and and
bar can bar bar | can
boy car boy boy | car
but cat but but | cat
dad dad can dad dad
day eat car day | eat
did eel cat did | eel
dip egg dad dip | egg
far get day far | get
fir gum did fir | gum
for gym dip for | gym
hat ill eat hat | ill
him ink eel him | ink
hip its egg hip | its
how zap far how <
zap zip fir zap zap
zip zoo for zip zip
zoo get zoo zoo
gum
gym
hat
him
hip
how
ill
ink
its
zap
zip
zoo
-----|-------|---------|---------------
20 | 19 | 32 | 20
这里我们有 2 个排序的文件，每个文件有 19 行。2个文件的sort+uniq加起来显示31行，diff也显示31行：
| file1+2 |
| sort | diff -y -W 12
file1| file2 | uniq | file1 file2
-----|-------|---------|---------------
act act act act act
all all all all all
and and and and and
fad bar bar > bar
far boy boy > boy
fir but but > but
for can can > can
get car car > car
gum cat cat > cat
gym dad dad > dad
hat day day > day
him did did > did
hip eat eat > eat
ill eel eel > eel
ink egg egg > egg
its fad fad fad fad
zap zap far far <
zip zip fir fir <
zoo zoo for for <
get get <
gum gum <
gym gym <
hat hat <
him him <
hip hip <
ill ill <
ink ink <
its its <
zap zap zap
zip zip zip
zoo zoo zoo
-----|-------|---------|---------------
19 | 19 | 31 | 31
这里我们有 2 个文件，每个文件有 31 行。2个文件的sort+uniq加起来也显示31行，但是diff显示43行：
| file1+2 |
| sort | diff -y -W 12
file1| file2 | uniq | file1 file2
-----|-------|---------|---------------
act act act act act
all all all all all
and and and and and
bar far bar bar <
boy fir boy boy <
but for but but <
can get can can <
car gum car car <
cat gym cat cat <
dad hat dad dad <
day him day day <
did hip did did <
eat how eat eat <
eel ill eel eel <
egg ink egg egg <
far its far far far
fir bar fir fir fir
for boy for for for
get but get get get
gum can gum gum gum
gym car gym gym gym
hat cat hat hat hat
him dad him him him
hip day hip hip hip
how did how how how
ill eat ill ill ill
ink eel ink ink ink
its egg its its its
zap zap zap > bar
zip zip zip > boy
zoo zoo zoo > but
> can
> car
> cat
> dad
> day
> did
> eat
> eel
> egg
zap zap
zip zip
zoo zoo
-----|-------|---------|---------------
31 | 31 | 31 | 43
虽然最后一个示例不适合您的具体情况，因为其中一个输入文件未排序，但我已将其包含在可能没有您确切情况的其他人中。