Shell tips modification Suffix and grep

Batch modify file suffix

The first type:

#!/bin/bashfor fn in *.$1domv $fn ${fn%$1}$2done

The second type:

Find. -name "*.txt" | Awk-f ' [./]+ ' {print $} ' | Xargs-i-T mv {}.txt {}.sh

GREP User Tips

The file is as follows:

# cat Test.txt This was a test Filea good day and no coludysit here and sing a Songmiss Agao istingbut money are money!this Is:hangonly one line.

-W matches entire word, avoids word character match

# grep-w is Test.txt-a test filebut money are money!this Is:hang

No match to Isting

-A matches N rows after

# grep-a 3 sit test.txt sit here and sing A Songmiss Agao istingbut money are money!this Is:hang

-B matches the previous n rows

# grep-b 2 Sit test.txt This was a test Filea good day and no coludysit here and sing a song

-C matches before and after n rows

# grep-c 2-i sit test.txt This was a test Filea good day and no coludysit here and sing a songmiss Agao istingbut money I S money!

-C Statistics Match line number:

# grep-c is test.txt 4

-O displays only matching strings:

# Grep-o Money Test.txt Moneymoney

-o-b shows the location of the match:

# Grep-o-B Sit test.txt 45:sit

Intersection and Difference sets:

# cat 1.txt 1234# cat 2.txt 123456

Intersection:

# grep-f 1.txt 2.txt 1234

Subtraction

# GREP-VF 1.txt 2.txt 56

This article is from the "OPS rookie" blog, please be sure to keep this source http://ckl893.blog.51cto.com/8827818/1766655

Shell tips modification Suffix and grep