How to use Bash to create a folder if it doesn t already exist

Question

bin bash if   -d  home mlzboy b2c2 shared db   then     mkdir -p  home mlzboy b2c2 shared db  fi    This doesn t seem to work   Can anyone help

User · Answer

There is actually no need to check whether it exists or not  Since you already wants to create it if it exists   just mkdir will do  mkdir -p  home mlzboy b2c2 shared db

User · Answer

You need spaces inside the   and   brackets      bin bash if     -d  home mlzboy b2c2 shared db    then     mkdir -p  home mlzboy b2c2 shared db fi

User · Answer

Cleaner way  exploit shortcut evaluation of shell logical operators  Right side of the operator is executed only if left side is true       -d  home mlzboy b2c2 shared db    amp  amp  mkdir -p  home mlzboy b2c2 shared db

User · Answer

I think you should re-format your code a bit      bin bash if     -d  home mlzboy b2c2 shared db    then     mkdir -p  home mlzboy b2c2 shared db  fi

User · Answer

First  in bash     is just a command  which expects string     as a last argument  so the whitespace before the closing bracket  as well as between     and  -d  which need to be two separate arguments too  is important   if     -d  home mlzboy b2c2 shared db    then   mkdir -p  home mlzboy b2c2 shared db  fi   Second  since you are using -p switch to mkdir  this check is useless  because this is what does in the first place  Just write   mkdir -p  home mlzboy b2c2 shared db    and thats it

User · Answer

Simply do   mkdir  path to your potentially existing folder   mkdir will throw an error if the folder already exists  To ignore the errors write   mkdir -p  path to your potentially existing folder   No need to do any checking or anything like that     For reference    -p  --parents  no error if existing  make parent directories as needed http   man7 org linux man-pages man1 mkdir 1 html

[bash] How to use Bash to create a folder if it doesn't already exist?

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