一、引言
今天才知道Linux下的rename有两个版本，util-linux工具集的rename和Perl版本的rename，而两者的用法是明显不一样的，Perl版rename相对比较强大
二、对比
perl-rename
RENAME(1) Perl Programmers Reference Guide RENAME(1) NAME rename - renames multiple files SYNOPSIS rename [ -v ] [ -n ] [ -f ] perlexpr [ files ] DESCRIPTION "rename" renames the filenames supplied according to the rule specified as the first argument. The perlexpr argument is a Perl expression which is expected to modify the $_ string in Perl for at least some of the filenames specified. If a given filename is not modified by the expression, it will not be renamed. If no filenames are given on the command line, filenames will be read via standard input. For example, to rename all files matching "*.bak" to strip the extension, you might say rename 's/.bak$//' *.bak To translate uppercase names to lower, you'd use rename 'y/A-Z/a-z/' * OPTIONS -v, --verbose Verbose: print names of files successfully renamed. -n, --no-act No Action: show what files would have been renamed. -f, --force Force: overwrite existing files. ENVIRONMENT No environment variables are used. AUTHOR Larry Wall SEE ALSO mv(1), perl(1) DIAGNOSTICS If you give an invalid Perl expression you'll get a syntax error. BUGS The original "rename" did not check for the existence of target filenames, so had to be used with care. I hope I've fixed that (Robin Barker). perl v5.18.2 2014-01-14 RENAME(1)
可以看到它的使用方法是 rename [ -v ] [ -n ] [ -f ] perlexpr [ files ] 支持perl正则表达式的，这就是它强大的原因
util-linux-rename
RENAME(1) Linux Programmer’s Manual RENAME(1) NNAAMMEE rename - Rename files SYNOPSIS rename from to file... rename -V DESCRIPTION rename will rename the specified files by replacing the first occurrence of from in their name by to. -V, --version Display version information and exit. For example, given the files foo1, ..., foo9, foo10, ..., foo278, the commands rename foo foo0 foo? rename foo foo0 foo?? will turn them into foo001, ..., foo009, foo010, ..., foo278. And rename .htm .html *.htm will fix the extension of your html files. SEE ALSO mmv(1), mv(1) AVAILABILITY The rename command is part of the util-linux-ng package and is avail- able from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. 1 January 2000 RENAME(1)
util-linux工具集中的rename的用法是 rename from to files 把文件名中的from改为to