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Full Discussion: How do I do if(string.endsWith("/")) in shell
Top Forums Shell Programming and Scripting How do I do if(string.endsWith("/")) in shell Post 302277287 by vino on Friday 16th of January 2009 12:13:33 AM
Old 01-16-2009
Quote:
Originally Posted by klogger
I have a string that may or may not end with a '/' and would like to do something if it does not end in a slash. I have tried:

Code:
if "/home/test/blah/blah" | sed 's/\/$//'
then
    echo "OK"
fi

but I think sed works on input streams only and not files. I am not a shell programmer of any kind and am having difficulty in finding infomation on such things.
I think there are multiple ways to do this. Here is one using grep.
You could use grep to find out the last character and act accordingly.

See this
Code:
[/tmp]$ echo "/a/b/c/" | grep -qE "/$"
[/tmp]$ echo $?
0
[/tmp]$ echo "/a/b/c" | grep -qE "/$"
[/tmp]$ echo $?
1

$? holds the exit status. If the match was found, then the exit status is 0.
The -q flag is required so that in case of success, nothing is printed out.
The -E flag is allow regex matching. The $ denoted the end of the string. So "/$" denotes the end of string is a "/"
 

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LEARN ABOUT PLAN9

shell

shell(1F)							   FMLI Commands							 shell(1F)

NAME

       shell - run a command using shell

SYNOPSIS

       shell command [command] ...

DESCRIPTION

       The  shell  function  concatenate  its arguments, separating each by a space, and passes this string to the shell ($SHELL if set, otherwise
       /usr/bin/sh).

EXAMPLES

       Example 1: A sample output of shell command.

       Since the Form and Menu Language does not directly support background processing, the shell function can be used instead.

       `shell "build prog > /dev/null &"`

       If you want the user to continue to be able to interact with the application while the background job is running, the  output  of  an  exe-
       cutable	run  by shell in the background must be redirected: to a file if you want to save the output, or to /dev/null if you don't want to
       save it (or if there is no output), otherwise your application may appear to be hung until the background job finishes processing.

       shell can also be used to execute a command that has the same name as an FMLI built-in function.

NOTES

       The arguments to shell will be concatenate using spaces, which may or may not do what is expected. The variables set in local  environments
       will not be expanded by the shell because "local" means "local to the current process."

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sh(1), attributes(5)

SunOS 5.10							    5 Jul 1990								 shell(1F)
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