UNIX for Dummies Questions & Answers

I apologize if this treads already covered ground (which I sure it must have), however I wasn't able to determine what I needed from searches.

I'm trying to do detemine if a string represents a file name or not (i.e., is in the form "string.ext" or just "string"), by seeing if there's a period in the string.

I've created the string by parsing a list of paths. Some are paths to folders, some directly to files (this is a list of things to zip up into an archive). Like so:

/Volumes/tester/folder1
/Volumes/tester/folder1/test.txt

etc.

By awking via the "/" I can find the last part of the path. Now I just need to determine if it's a "string" or a "string.ext".

I already have the string set in a variable. I know I could do something like:

Code:

set MYVARIABLE	= `echo $string | awk -F. '{print $1}'`

which works perfectly if the string is in the "string.ext" form. However I only want to do that if I already know there's a period in the file name.

So is there a way to test the string first for a period and then do what I need to do based on that result?

Thanks for any help!

Try:

Code:

set MYVARIABLE	= `echo $string | awk -F. 'NF > 1 {print $1}'`

I'm sure there is a better way to do your work (with test command) but I know about csh programming almost nothing,

Hey yazu,

Thanks for that solution - that at least either gives me the result or an empty string. Now I need to do a search to figure out how to test the variable for a null value...

---------- Post updated at 04:10 PM ---------- Previous update was at 03:58 PM ----------

O.k, a combo of yazu's solution and a null string check does the job:

Code:

foreach ITEM ($DIRLIST)
	set SERVER			= `echo $ITEM | awk -F/ '{print $3}'`
	set SERVER_TARGET 	= `echo $ITEM | awk -F/ '{print "/"$2"/"$3"/"}'`
	set SOURCE			= `echo $ITEM | awk -F$SERVER_TARGET '{print $2}'`
	set SLSH_CNT_PRE	= `echo $ITEM | awk -F/ '{print NF-1}'`
	@ SLSH_CNT		= $SLSH_CNT_PRE + 1
	set LAST_PART		= `echo $ITEM | awk -v var1="$SLSH_CNT" -F/ '{print $var1}'`
	set TESTER  = `echo $LAST_PART | awk -F. 'NF > 1 {print $1}'`
	echo "----- $ITEM Variables -----"
	echo "slash count is   :$SLSH_CNT"
	echo "last part is     :$LAST_PART"
	if ( ${%TESTER} == 0 ) then
		echo "$LAST_PART does not have a period in it."
	else
		echo "$LAST_PART has a period in it."
	endif
	echo ""
end

which when run on the following list:

/Volumes/projects/_library/assets/textures/SeaLife/seaweed/seaweed01_base_v2.jpg
/Volumes/projects/_library/assets/digital-doubles/dd_sean/txt/DD_sean_splint_color.exr
/Volumes/projects/es/0697/3d/cam/_PUBLISH

produces the following result:

----- /Volumes/projects/_library/assets/textures/SeaLife/seaweed/seaweed01_base_v2.jpg Variables -----
slash count is :10
last part is :seaweed01_base_v2.jpg
seaweed01_base_v2.jpg has a period in it.

----- /Volumes/projects/_library/assets/digital-doubles/dd_sean/txt/DD_sean_splint_color.exr Variables -----
slash count is :10
last part is D_sean_splint_color.exr
DD_sean_splint_color.exr has a period in it.

----- /Volumes/projects/es/0697/3d/cam/_PUBLISH Variables -----
slash count is :9
last part is :_PUBLISH
_PUBLISH does not have a period in it.


Thanks!