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Top Forums Shell Programming and Scripting removing the filename extension Post 302501486 by alister on Thursday 3rd of March 2011 04:43:35 PM
Old 03-03-2011
Quote:
Originally Posted by in2nix4life
for x in *;do mv $x $(echo ${x%*.*});done
There's no need for the echo command substitution and the first asterisk in your parameter substitution is meaningless since it's a shortest match (% instead of %%). Also, the filenames in question have spaces (perhaps that info was added after you had read the post), so the expansions need to be double quoted to protect them from field splitting.

A slightly simpler version of your approach:
Code:
for x in *; do
    mv "$x" "${x%.*}"
done

---------- Post updated at 04:43 PM ---------- Previous update was at 04:40 PM ----------

Quote:
Originally Posted by daflore
Is there an easy way to strip off a filename's extension?
...<snip>...
Thanks. I have a directory full of filenames that need to be manipulated in this way.
If it's possible that striping the file extension from file1 can match an existing file, file2, and if you don't want file2 clobbered, you'll want to test for the existence of file2 before doing the mv.

Regards,
Alister
 

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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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