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Full Discussion: removing the filename extension
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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LEARN ABOUT NETBSD

pfs

PFS(8)							    BSD System Manager's Manual 						    PFS(8)

NAME

     pfs -- save and restore information for NAT and state tables

SYNOPSIS

     pfs [-v] -l
     pfs [-bv] -R filename
     pfs [-bv] -r filename
     pfs [-v] -u
     pfs [-bv] -W filename
     pfs [-bv] -w filename

DESCRIPTION

     The pfs command allows state information created for NAT entries and rules using ``keep state'' to be locked (modification prevented) and
     then saved to disk, allowing for the system to experience a reboot, followed by the restoration of that information, resulting in connections
     not being interrupted.

OPTIONS

     -b 	    The information are read or stored using binary format.  The default format is a readable ASCII format, similar to pfctl.conf
		    syntax.

     -l 	    Lock state tables in the kernel.

     -R filename    Restore information from filename and load it into the kernel.  The state tables are locked at the beginning of this operation
		    and unlocked once complete.

     -r filename    Read information in from filename and load it into the kernel.  This requires the state tables to have already been locked and
		    does not change the lock once complete.

     -u 	    Unlock state tables in the kernel.

     -v 	    Provide a verbose description of what's being done.

     -W filename    Write information from the kernel out to filename.	The state tables are locked at the beginning of this operation and
		    unlocked once complete.

     -w filename    Write information from the kernel out to filename.	This requires the state tables to have already been locked and does not
		    change the lock once complete.

FILES

     /dev/pf

SEE ALSO

     pf(4)

BSD
								   July 21, 2009							       BSD
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