shell命令wc,md5sum,basename

2、wc [-lwm]

选项与参数：

-l  ：仅列出行；

-w  ：仅列出多少字(英文单字)；

-m  ：多少字符；

3、md5sum

md5sum [OPTION]... [FILE]...

Print or check MD5 (128-bit) checksums.

With no FILE, or when FILE is -, read standard input.

  -b, --binary         read in binary mode

  -c, --check          read MD5 sums from the FILEs and check them

  -t, --text           read in text mode (default)

1)示例

md5sum prime.cpp

md5sum prime.cpp > md5_file

md5sum *.cpp > md5_file

验证：

md5sum -c md5_file

7、basename,dirname

1)Usage: basename NAME [SUFFIX]

  or:  basename OPTION

Examples:

  basename /usr/bin/sort       Output "sort".

  basename include/stdio.h .h  Output "stdio".

2)Usage: dirname NAME

  or:  dirname OPTION

Examples:

  dirname /usr/bin/      Output "/usr".

  dirname stdio.h        Output ".".

转载于:https://www.cnblogs.com/mydomain/archive/2011/09/26/2191762.html