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Extracting Details from string -- Help Me!!!

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# 1  
Old 07-24-2014
Question Extracting Details from string -- Help Me!!!
Hi Experts,

I am executing a script in bash profile and having file path as follows:
Code:
$FilePath=$HOST_NAME_LAND/home/chandan/abc.txt

where $HOST_NAME_LAND is an environment variable which points to the server name.
Code:
export $HOST_NAME_LAND=//<server name>

The environment variable name and server name may vary for different modules.

What I need is to separate the file path(/home/chandan/abc.txt) from the environment variable($HOST_NAME_LAND), to check the existence of the file on that server?

Need your help!!

Thanks in advance.

Thanks,
Upayan
Last edited by Don Cragun; 07-24-2014 at 04:26 AM.. Reason: Add CODE and ICODE tags.
# 2  
Old 07-24-2014
Code:
 echo $FilePath | cut -d"/" -f1

 echo "$FilePath" | sed   's/$HOST_NAME_LAND//'

# 3  
Old 07-24-2014
Try:
Code:
[ -f ${FilePath#$HOST_NAME_LAND} ] && echo "File Exists"

# 4  
Old 07-24-2014
Thanks Panayam and Chacko193.

This is not going to resolve the issue because the environment variable name, file name and file path will vary module wise. So, I need a more generic approach.

Thanks,
ChandanN
# 5  
Old 07-24-2014
Try:
Code:
[ -f ${FilePath#//[a-zA-Z]*} ] && echo "File exists"

This assumes that the expansions of HOST_NAME_LAND and the other evn variables containing the server name starts with // (as per your OP) and they only contain alphabets.

If they contain numerals as well , try:
Code:
[ -f ${FilePath#//[a-zA-Z0-9]*} ] && echo "File exists"

# 6  
Old 07-24-2014
Quote:
Originally Posted by ChandanN
Hi Experts,
I am executing a script in bash profile and having file path as follows:
Code:
$FilePath=$HOST_NAME_LAND/home/chandan/abc.txt

Which language/shell are you using? the above is not a valid shell syntax.
Also, as others asked, if you want to be generic, please provide the criteria based on which the file name can be extracted.
# 7  
Old 07-24-2014
Assuming your variable assignments did work, and that you are using a recent shell,
Code:
echo $FilePath
//<server name>/home/chandan/abc.txt
echo /${FilePath#//*/}
/home/chandan/abc.txt

should work.
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