Rename Files in Batch Mode
Once for a while, we need to rename a number of files. This can of course be
easily done with a trivial shell script (or in Emacs dird mode). However, in
fact, there is already an even handier command line tool called
rename to cope
The usage is simple. To rename string "from" to "to" in file1, file2 etc., simply run
rename from to file1 file2 ...
In fact, we do not usually explicitly list every file to be renamed since we have file name glob!. Here is an example which renames all html files' extension from ".html" to ".htm".
rename html htm *.html
Please note that this tool does not only work with suffix. It replaces the "from" string in any place in the file names. See the below for an example.
$ ls *env* smallenv.beg1 smallenv.beg2 smallenv.common smallenv.proxyg1 smallenv.proxyg2 $ rename small set *env* $ ls *env* setenv.beg1 setenv.beg2 setenv.common setenv.proxyg1 setenv.proxyg2
You should be really cautious with "unexpected" occurrence of "from" string in file names since "rename" replaces the first and only the first occurrence of "from" in the file names. Note that in the following example the file name suffix is NOT changed.
$ ls how_html_generated.html $ rename html htm * $ ls how_htm_generated.html
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