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Shell Script Help..Renaming Quoted files removing the timestamp

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# 8  
Old 11-05-2015
Hi Don,

Thanks for ur reply.
POSIX I am not sure of.. Smilie
But yes - the script is a .csh script.
Shell gives me a $ prompt.
I am working on the script through putty utility.
Also,if you could explain the
Code below, it will help me to understand better how to incorporate it in my script.
Code:
 FN="'ABDDUT20513'13May06:03:45"
echo mv "$FN" "${FN%\'*}'"


Thanks & Regards,
Khman.
# 9  
Old 11-05-2015
The code we supplied assumed that you were using a shell that uses the same syntax as the shell in the POSIX standards (such as ash, bash, dash, ksh, zsh, and many others). But, csh and shells that use its syntax (such as tcsh) are a completely different language when it comes to parameter expansions.

If you want to use csh, other volunteers here may be able to help you.
# 10  
Old 11-05-2015
Quote:
Originally Posted by looney
Hi Don,

Kindly brief about % in code echo mv "$FN" "${FN%\'*}'"
Thanks,
From the standards (or your shell's man page):
Code:
${parameter%word} Remove Smallest Suffix Pattern.
	The word shall be expanded to produce a pattern. The parameter
	expansion shall then result in parameter,  with the smallest portion
	of the suffix matched by the pattern deleted.  If present, word shall
	not begin with an unquoted '%'.

This is not supported by csh and other shells that use csh syntax.

So, for this thread, with filenames that start with a single quote and contain one other single quote, this parameter expansion expands to the contents of the variable with everything starting with the second single quote to the end of the filename replaced by a single single quote.
# 11  
Old 11-05-2015
In csh, command substitution should work (albeit ineffectively):
Code:
FN="'filename20513'13May06:03:45"
echo mv "$FN" `echo "$FN" | sed "s/[^\']*$//"`
mv 'filename20513'13May06:03:45 'filename20513'

These 2 Users Gave Thanks to RudiC For This Post:
Don Cragun khman
# 12  
Old 11-06-2015
Hi Don,

Thanks for the update.

Hi RudiC,

Thank you for your response.
Can you plz explain me the code?
It will help me to understand and then incorporate in my script.

Also, one of the colleagues gave me a suggestion to use
Code:
awk command

... and then a field separator.

Can you guys help me on that..?

Thanks as always for your valuable time and help on this.

Thanks & Regards,
khman.
# 13  
Old 11-06-2015
man csh:
Quote:
Command Substitution A command enclosed by backquotes (`...`) is performed by a subshell. Its standard output is broken into separate words at each space character, tab and newline; null words are discarded. This text replaces the backquoted string on the current command line. Within double-quotes, only newline characters force new words; space and tab characters are pre- served. However, a final newline is ignored. It is therefore possible for a command sub- stitution to yield a partial word.
So the result of the sed substitution will be used as the target for the mv command.

I don't see awk being able to provide a significant improvement to above proposal.
This User Gave Thanks to RudiC For This Post:
khman
# 14  
Old 11-06-2015
Thanks RudiC for your help.
But my filename is dynamic.

So when i used the above code to assign the file name to a variable, lets say FN or TEMPFILE... it gives the below error

Code:
set TEMPFILE=`\'*\'${date}*`
'ABCCDT20513'13May06:03:45
'ABCCDT20513'13May06:03:45: Command not found.

In above case value for
Code:
$date variable

passed is 13May

How should I assign the dynamically created file name to a variable so that i can do further processing on that variable containing the quoted file name in the
Code:
 mv command

?

Thanks & Regards,
Khman.
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