Very Computer

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>Can someone help me quote the following correclty?

>/bin/sh -c 'echo $C3PDIR | cut -d/ -f3,4 | sed 's/\///''

/bin/sh -c 'echo $C3PDIR | cut -d/ -f3,4 | sed s:/::'

Since the sed parameter doesn't contain any special characters, no quoting
is needed there.  Notice also that I changed the sed delimiter character to
avoid having to escape the slash -- keep this in your repertoire whenever
you're using sed to manipulate pathnames.

--

GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.

 Change the outer single quotes to double quotes.

 And rewrite the command as:

             /bin/sh -c "echo $C3PDIR | cut -d/ -f3,4 | sed 's/\///'"

-Syamal.

-Syamal.
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Quote:> Can someone help me quote the following correclty?

> /bin/sh -c 'echo $C3PDIR | cut -d/ -f3,4 | sed 's/\///''

> produces: First RE may not be null
> where $C3PDIR = /apps/c3p/6.1

> Thanks.

> --
> Regards,

> Daniel E. Lincoln

stadigad.vcf < 1K Download

This is quite true.  But to answer the asked question, just
for the sake of its educational value (I don't think we've
had this question in the last few weeks, must be time to show
the technique to the new readers of this group):
  /bin/sh -c 'echo $C3PDIR | cut -d/ -f3,4 | sed '\''s,/,,'\'

The idomatic way to "add" a single quote to a single quoted
string in the shell is to:
  + end the string with a ',
  + add a \-escaped ',
  + start a new ' string.
Thus the '\'' sequence in the middle.  Because this idiom would
have left an empty string between the final two 's, I just
omitted those two 's from the final result.

                --Ken Pizzini