Creating new directories


 
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# 1  
Old 02-17-2018
Creating new directories

I want to create a new system of directory structure for example

Code:
mkdir -p ./iv.sac/resu/hhz.d

However, I think that `mkdir -p` overwrites the directories. I want to avoid that
and am doing something as follows in my bash script

Code:
echo -e "\nCreating directories:" 
odir_nwk="./iv.sac/resu/hhz.d"
if [ -d "$odir_nwk" ]; then
  echo "Directory already exists: $odir_nwk"
else
  echo "mkdir -p $odir_nwk"
fi

I suppose this will only check if the directory `./iv.sac/resu/hhz.d`
exists but might overwrite `./iv.sac/resu` for example.

Would like to make this foolproof. What can I do?
# 2  
Old 02-17-2018
What do you mean by "overwrite"?

If ./iv.sac/resu/hhz.d exists, so does ./iv.sac/resu and won't be touched.

man mkdir:
Quote:
‘-p’
‘--parents’
Make any missing parent directories for each argument, setting their file permission bits to the umask modified by ‘u+wx’. Ignore existing parent directories, and do not change their file permission bits.
# 3  
Old 02-17-2018
Quote:
Originally Posted by kristinu
I suppose this will only check if the directory `./iv.sac/resu/hhz.d`
exists but might overwrite `./iv.sac/resu` for example.

Would like to make this foolproof. What can I do?
mkdir -p will create intermediary directories only as necessary. That is, it won't try to re-create it if the directory already exists.
This User Gave Thanks to milhan For This Post:
# 4  
Old 02-17-2018
Possible Problems to avoid

Many directories will be created and I want to avoid a situation where
if there is a mistake the user might loose any directories or files.
# 5  
Old 02-17-2018
I don't really follow you. Nothing will be lost with 'mkdir', despite your earlier assertion that "I think that `mkdir -p` overwrites the directories. I want to avoid that". mkdir doesn't do anything except make directiories. It doesn't delete anything.

It's a Unix thing - 'do one thing, and do it well' Smilie
This User Gave Thanks to Scott For This Post:
# 6  
Old 02-17-2018
No problem

Quote:
Originally Posted by Scott
I don't really follow you. Nothing will be lost with 'mkdir', despite your earlier assertion that "I think that `mkdir -p` overwrites the directories. I want to avoid that". mkdir doesn't do anything except make directiories. It doesn't delete anything.

It's a Unix thing - 'do one thing, and do it well' Smilie
Not an assertion, just a clarification. Sometime there might be some option or whatever to delete things. But as you mention it's ok.
# 7  
Old 02-18-2018
Quote:
Originally Posted by kristinu
Not an assertion, just a clarification. Sometime there might be some option or whatever to delete things. But as you mention it's ok.
It is always a good idea to make use of the man pages on the system you are using those unix commands.
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