向高人请教：怎么从大量的文件中grep - 未名空间MITBBS历史存档

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向高人请教：怎么从大量的文件中grep

向高人请教：怎么从大量的文件中grep# Unix - 噫吁兮，危乎高哉

n*r2010-07-19 07:07

1 楼

Hi,
Any one know how to use grep. I got the following error:
Arguments too long
I do some research on this issue. Some one said I can use xargs. The I try:
find . -type f |xargs grep "Run_Time" *
I get the error again.
各位高人可有什么建议？我知道文件的数目很大。不知谁有写过scripts.
或者用其他方法。比如怎么按文件生成的时间来查。先grep今天生成的文件，在grep昨
天生成的文件。
先谢了。

w*m2010-07-19 07:07

2 楼

Here is my favorite grep command,
maybe you can modify it,
find .-name '*' -exec grep "Run_Time" {} \; -print
I think you can change -name to -type

【在 n**r 的大作中提到】

: Hi,
: Any one know how to use grep. I got the following error:
: Arguments too long
: I do some research on this issue. Some one said I can use xargs. The I try:
: find . -type f |xargs grep "Run_Time" *
: I get the error again.
: 各位高人可有什么建议？我知道文件的数目很大。不知谁有写过scripts.
: 或者用其他方法。比如怎么按文件生成的时间来查。先grep今天生成的文件，在grep昨
: 天生成的文件。
: 先谢了。

n*r2010-07-19 07:07

3 楼

I try your suggestion, but I got the "Arguments too long" Error.
Thank you any way. This is a good idea.

j*y2010-07-19 07:07

4 楼

"Arguments too long" Error means your file list is too big for find to
handle. Try to use perl, here's how:
perl -e 'opendir(DIR, "."); @all = grep //, readdir DIR; closedir
DIR; for (@all) { do something }'