How to mkdir only if a dir does not already exist?

Posted by Spike Williams on Stack Overflow See other posts from Stack Overflow or by Spike Williams
Published on 2009-04-27T14:47:44Z Indexed on 2010/04/25 6:03 UTC
Read the original article Hit count: 249

Filed under:

ksh

|

shell

|

shell-scripting

|

mkdir

|

aix

I am writing a script to run under the korn shell on AIX. I'd like to use the mkdir command to create a directory. But the directory may already exist, in which case I don't want to do anything. So I want to either test to see that the directory doesn't exist, or suppress the "File exists" error that mkdir throws when it tries to create an existing directory.

Any thoughts on how best to do this?

© Stack Overflow or respective owner

Related posts about ksh

home, end, delete, pageup, pagedown with ksh

as seen on Server Fault - Search for 'Server Fault'
Hello. I want to use home, end, delete, pageup, pagedown with ksh. My TERM is xterm-color. These keys works fine with tcsh and zsh, but not with ksh (print a tilda ~) I found this: bind '^[[3'=prefix-2 bind '^[[3~'=delete-char-forward bind '^[[1'=prefix-2 bind '^[[1~'=beginning-of-line bind '^[[4'=prefix-2 bind… >>> More
ksh: assigning function output to an array

as seen on Stack Overflow - Search for 'Stack Overflow'
Why doesn't this work??? #!/bin/ksh # array testfunc() function testfunc { typeset -A env env=( one="motherload" ) print -r $env return 0 } testfunc # returns: ( one=motherload ) typeset -A testvar # segfaults on linux, memfaults on solaris testvar=$(testfunc) # segfaults… >>> More
Getting past dates in HP-UX with ksh

as seen on Stack Overflow - Search for 'Stack Overflow'
Ok, so I need to translate a script from a nice linux & bash configuration to ksh in hp-ux. Each and every command expects a different syntax and i want to kill myself. But let's skip the rant. This is part of my script anterior=`date +"%Y%0m" -d '1 month ago'` I basically need to get a past… >>> More
Converting /bin/ksh commands to their PERL equivalent, and executing

as seen on Stack Overflow - Search for 'Stack Overflow'
How do I do the following conversion within a PERL script? cd /usr/src/sys --- chdir '/usr/src/sys' execute "chdir '/usr/src/sys' " >>> More
KSH shell script won't execute and returns 127 (not found)

as seen on Stack Overflow - Search for 'Stack Overflow'
Can anyone enlighten me why the following won't work? $ groups staff btgroup $ ls -l total 64 -rw-rw---- 1 sld248 btgroup 26840 Apr 02 13:39 padaddwip.jks -rwxrwx--- 1 sld248 btgroup 1324 Apr 02 13:39 padaddwip.ksh $ ./padaddwip.ksh ksh: ./padaddwip.ksh: not found… >>> More

Related posts about shell

How to restrict the users' shell allowing to execute shell programs

as seen on Server Fault - Search for 'Server Fault'
Is it possible to prevent any user to not use commands like ls, rm and other system commands which could harm the system. But the users should be able to execute shell programs. >>> More
Shell extension installation not recognized by Windows 7 64-bit shell

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a Copy Hook Handler shell extension that I'm trying to install on Windows 7 64-bit. The shell extension DLL is compiled in two separate versions for 32-bit and 64-bit Windows. The DLL implements DLLRegisterServer which adds the necessary registry entries. After adding the registry entries… >>> More
Running shell commands without a shell window

as seen on Stack Overflow - Search for 'Stack Overflow'
With either subprocess.call or subprocess.Popen, executing a shell command makes a shell window quicky appear and disappear. How can I run the shell command without the shell window? >>> More
Why can't I reinstall MySQL?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I've been looking all around the Internet for an answer but didn't find anything. I hope you can help me now. I have a server with MySQL. From one day to another, MySQL didn't let me enter with my root password anymore (accsess denied for user 'root'@'localhost' using password: 'YES'). So I tried… >>> More
Bash/shell script - shell output redirection inside a function

as seen on Stack Overflow - Search for 'Stack Overflow'
function grabSourceFile { cd /tmp/lmpsource wget $1 > $LOG baseName=$(basename $1) tar -xvf $baseName > $LOG cd $baseName } When I call this function The captured output is not going to the log file. The output redirection works fine until I call the… >>> More