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Creating a new directory by getting input from user


 
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Top Forums UNIX for Dummies Questions & Answers Creating a new directory by getting input from user
# 8  
Old 02-08-2014
Quote:
Originally Posted by Pradeep_1990
Thanks a lot Guys..

@wisecrackerSmiliene question though..

if [ -d "${drawer}" ]

What does this line do ?

Thanks all again..Smilie
"if" is obvious.
"[" means the same as the command "test" as in here:-
Code:
Last login: Sat Feb  8 15:21:40 on ttys000
AMIGA:barrywalker~> drawer="/Users/barrywalker/Desktop/Code"
AMIGA:barrywalker~> if test -d "$drawer"
> then
> echo "Yup $drawer does exist..."
> fi
Yup /Users/barrywalker/Desktop/Code does exist...
AMIGA:barrywalker~> _

And "-d" is to denote that a directory/drawer/folder is the thing to look for.
"$drawer" could be any absolute or relative path.
The braces "{}" in my first reply are not doing anything in my original case but can
be used for special expansion conditions. (Added for fullness.)
And also I forgot, "]" ends that particular test proceedure...

I will let you research on the curly braces... ;o)

Last edited by wisecracker; 02-08-2014 at 11:55 AM.. Reason: Added the "forgot" bit...
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# 9  
Old 02-08-2014
You might want to use:
Code:
if [ -e "$drawer" ]

instead of:
Code:
if [ -d "$drawer" ]

The -e will evaluate to true if any file (whether or not it is a directory) already exists with the given name. A call to mkdir will fail if the target exists even if it is not a directory.
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# 10  
Old 02-11-2014
Thanks a lot for the reply guys..Smilie
# 11  
Old 02-11-2014
Just a little addition (and using what just learned) :

Code:
read -p "Please enter the dirname to create: " DIRTOCREATE
[ ! -e "$DIRTOCREATE" ] && mkdir -p "$DIRTOCREATE"


Last edited by sea; 02-11-2014 at 05:11 AM.. Reason: Added missing "!", ty bakunin
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# 12  
Old 02-11-2014
Quote:
Originally Posted by sea
Code:
[ -e "$DIRTOCREATE" ] && mkdir -p "$DIRTOCREATE"

ahem..

you probably want it the other way round ;-) :

Code:
[ ! -e "$DIRTOCREATE" ] && mkdir -p "$DIRTOCREATE"

bakunin
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# 13  
Old 02-11-2014
Or:
Code:
[ -e "$DIRTOCREATE" ] || mkdir -p -- "$DIRTOCREATE"

This User Gave Thanks to radoulov For This Post:
# 14  
Old 04-09-2014
Thanks all..Smilie
 
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