Variable probleme

[Leo The Cat]

Hi

Here my call

find /su01/opus/html/*.html -type f -exec perl -i -pe 's|\Q’$ENVSOURCE’\E|’$ENVDEST’|g' {} \;


The problem is that $ENVSOURCE and $ENVDEST are never evaluated. Why ?

Bests Regards
Den

[Leo The Cat]

I have tried ${ENVSOURCE} without success
I have tried $($ENVSOURCE) without success

[Leo The Cat]

Important note


find /su01/opus/html/*.html -type f -exec perl -i -pe 's|\Qâ $ENVSOURCEâ \E|â $ENVDESTâ |g' {} \;

Works perfectly in a command line mode.

The problem is when I have trued to put this command in a ksh script !


Bests regards
Den

[Steven Schweda]

Some of those characters don't copy+paste on
my system, so I can't tell what they really
are, but inside apostrophes, variables are
not evaluated. For example:

alp$ E='a b c'
alp$ echo ${E}
a b c
alp$ echo "${E}"
a b c
alp$ echo '${E}'
${E}



"man sh"? Buy a book?

[Leo The Cat]

Sorry but I have no time to become a caid on sh ! It's because I come here !

[Ivan Ferreira]

As methioned above, replace single quotes by double quotes if you can. Single quotes prevents the variables from being subtituted.

Probably, you should write a perl script and call the script from the find command. I don't know much about perl.

[James R. Ferguson · Accepted solution]

Hi Den:

The $ENVSOURCE and $ENVDEST are Perl's variables, not the shell's. All you need do is this:

# export ENVSOURCE=oldthing
# export ENVDEST=newthing

# perl -i.old -pe 'BEGIN{$ENVSOURCE=$ENV{ENVSOURCE};$ENVDEST=$ENV{ENVDEST};};s|\Q.$ENVSOURCE.\E|.$ENVDEST.|g' file

Thus we export to the environment in which Perl will run and then tell Perl to use the exported environmental variables.

Obviously you can couple this with your shell find() as you wrote. You could also use Perl's 'File::Find' module directory.

Regards!

...JRF...

[Leo The Cat]

James and Ivan give me the good way.
Thanks Guys