On Unix, I want to ensure all program files in my $DEV directory are correctly terminated with a newline (most will be correct). I want the solution to be fast and short (in that order).

Any solution must properly handle file names with spaces in them (GNU find/xargs can use -print0/xargs -0, but standard find/xargs requires you to escape spaces with \ to stop xargs choking). Two attempts follow. The xargs solution seems a little faster than the pure Perl one. Improvements welcome. 

#!/bin/sh
find "$DEV" -name '*.cpp' -o -name '*.h' -o -name '*.c' | \
perl -lne'sysopen(Z,$_,0) && sysseek(Z,-1,2) && sysread(Z,$c,1) && clo
+se(Z) or warn("$_: $!\n"),next;$c eq "\n" or s/ /\\ /g,print' | \
xargs perl -i -lpe'eof && warn "Fixed $ARGV\n"'

[download]
#!/bin/sh
perl -MFile::Find -le'find({no_chdir=>1, wanted=>sub{/\.c(?:pp)?$/||/\
+.h$/ or return;sysopen(Z,$_,0) && sysseek(Z,-1,2) && sysread(Z,$c,1) 
+&& close(Z) or warn("$_: $!\n"),return;$c eq "\n" or push@f,$_}},$ENV
+{DEV});@f||exit;@ARGV=@f;$^I="";while(<>){chomp;print;eof && warn "Fi
+xed $ARGV\n"}'

[download]

In reply to Properly newline terminate a bunch of files on Unix by eyepopslikeamosquito

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