for a newbie to c shell setting a variable from echo output

31/07/2007, 11h16

Hello people

i have been stuck for over a day now on this one bit and i hope
someone out there can me.

i have a c shell script and basically i want to get the following
output into a variable for use further on in the script..

the output i want is generated from the below command

echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'

obviously if there is a better way then please advise but i need to
remove the last five characters from the ORACLE SID environment..

kind regards
Dal

31/07/2007, 12h02

DalUK wrote:
> Hello people

>
> i have been stuck for over a day now on this one bit and i hope
> someone out there can me.
>
> i have a c shell script and basically i want to get the following
> output into a variable for use further on in the script..
>
> the output i want is generated from the below command
>
> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
>
> obviously if there is a better way then please advise but i need to
> remove the last five characters from the ORACLE SID environment..
>
> kind regards
> Dal
>

Posix shells:

echo "${ORACLE_SID%?????}"

All shells:

expr x"$ORACLE_SID" : x"$.....$"

--
Michael Tosch @ hp : com

31/07/2007, 12h02

DalUK wrote:
> Hello people

>
> i have been stuck for over a day now on this one bit and i hope
> someone out there can me.
>
> i have a c shell script and basically i want to get the following
> output into a variable for use further on in the script..
>
> the output i want is generated from the below command
>
> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
>
> obviously if there is a better way then please advise but i need to
> remove the last five characters from the ORACLE SID environment..
>
> kind regards
> Dal
>

Posix shells:

echo "${ORACLE_SID%?????}"

All shells:

expr x"$ORACLE_SID" : x"$.....$"

--
Michael Tosch @ hp : com

31/07/2007, 12h04

Michael Tosch wrote:
> DalUK wrote:
>> Hello people

>>
>> i have been stuck for over a day now on this one bit and i hope
>> someone out there can me.
>>
>> i have a c shell script and basically i want to get the following
>> output into a variable for use further on in the script..
>>
>> the output i want is generated from the below command
>>
>> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>>
>>
>> obviously if there is a better way then please advise but i need to
>> remove the last five characters from the ORACLE SID environment..
>>
>> kind regards
>> Dal
>>
>
> Posix shells:
>
> echo "${ORACLE_SID%?????}"
>
> All shells:
>
> expr x"$ORACLE_SID" : x"$.....$"

Oops, the latter should be

expr x"$ORACLE_SID" : x"$.*$....."

--
Michael Tosch @ hp : com

31/07/2007, 12h04

Michael Tosch wrote:
> DalUK wrote:
>> Hello people

>>
>> i have been stuck for over a day now on this one bit and i hope
>> someone out there can me.
>>
>> i have a c shell script and basically i want to get the following
>> output into a variable for use further on in the script..
>>
>> the output i want is generated from the below command
>>
>> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>>
>>
>> obviously if there is a better way then please advise but i need to
>> remove the last five characters from the ORACLE SID environment..
>>
>> kind regards
>> Dal
>>
>
> Posix shells:
>
> echo "${ORACLE_SID%?????}"
>
> All shells:
>
> expr x"$ORACLE_SID" : x"$.....$"

Oops, the latter should be

expr x"$ORACLE_SID" : x"$.*$....."

--
Michael Tosch @ hp : com

31/07/2007, 12h41

DalUK <msn.dal@gmail.com> writes:

> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'

echo $ORACLE_SID | sed 's/.....$//s'

31/07/2007, 12h41

DalUK <msn.dal@gmail.com> writes:

> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'

echo $ORACLE_SID | sed 's/.....$//s'

31/07/2007, 12h47

On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
wrote:
> DalUK wrote:
> > Hello people

>
> > i have been stuck for over a day now on this one bit and i hope
> > someone out there can me.
>
> > i have a c shell script and basically i want to get the following
> > output into a variable for use further on in the script..
>
> > the output i want is generated from the below command
>
> > echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
> > obviously if there is a better way then please advise but i need to
> > remove the last five characters from the ORACLE SID environment..
>
> > kind regards
> > Dal
>
> Posix shells:
>
> echo "${ORACLE_SID%?????}"
>
> All shells:
>
> expr x"$ORACLE_SID" : x"$.....$"
>
> --
> Michael Tosch @ hp : com- Hide quoted text -
>
> - Show quoted text -

Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what
i had

however i still cannot seem to get the write syntax in c
shell to get that output into a variable, is this something you would
be able to assist me with

thanks
Dal

31/07/2007, 12h47

On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
wrote:
> DalUK wrote:
> > Hello people

>
> > i have been stuck for over a day now on this one bit and i hope
> > someone out there can me.
>
> > i have a c shell script and basically i want to get the following
> > output into a variable for use further on in the script..
>
> > the output i want is generated from the below command
>
> > echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
> > obviously if there is a better way then please advise but i need to
> > remove the last five characters from the ORACLE SID environment..
>
> > kind regards
> > Dal
>
> Posix shells:
>
> echo "${ORACLE_SID%?????}"
>
> All shells:
>
> expr x"$ORACLE_SID" : x"$.....$"
>
> --
> Michael Tosch @ hp : com- Hide quoted text -
>
> - Show quoted text -

Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what
i had

however i still cannot seem to get the write syntax in c
shell to get that output into a variable, is this something you would
be able to assist me with

thanks
Dal

31/07/2007, 13h22

On Jul 31, 6:16 am, DalUK <msn....@gmail.com> wrote:
> Hello people

>
> i have been stuck for over a day now on this one bit and i hope
> someone out there can me.
>
> i have a c shell script and basically i want to get the following
> output into a variable for use further on in the script..
>
> the output i want is generated from the below command
>
> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
> obviously if there is a better way then please advise but i need to
> remove the last five characters from the ORACLE SID environment..
>
> kind regards
> Dal

It sounds like you want to chop off the last five characters of
$ORACLE_SID. First of all, you're not testing to see what happens if
$ORACLE_SID is 5 characters or fewer. I'll assume you're doing that
elsewhere.

A simpler way to do what you want to do it this:

echo $ORACLE_SID | sed 's/.....$//'

In other words, replace five characters anchored to the end of the
string with null. Note that unlike the awk technique you used, if
ORACLE_SID has fewer than 5 characters, it isn't changed. You still
have a problem if ORACLE_SID is exactly 5 characters.

To get the result into another variable, use backticks -> ``

setenv NEWVAR `echo $ORACLE_SID | sed 's/.....$//'`

There are other ways of course, and I would recommend using a borne-
shell like shell such as ksh or bash instead of csh.

Good luck

Ken Beer

31/07/2007, 17h38

DalUK wrote:
> On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
> wrote:
>> DalUK wrote:
>>> Hello people

>>> i have been stuck for over a day now on this one bit and i hope
>>> someone out there can me.
>>> i have a c shell script and basically i want to get the following
>>> output into a variable for use further on in the script..
>>> the output i want is generated from the below command
>>> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>>> obviously if there is a better way then please advise but i need to
>>> remove the last five characters from the ORACLE SID environment..
>>> kind regards
>>> Dal
>> Posix shells:
>>
>> echo "${ORACLE_SID%?????}"
>>
>> All shells:
>>
>> expr x"$ORACLE_SID" : x"$.....$"
>>
>> --
>> Michael Tosch @ hp : com- Hide quoted text -
>>
>> - Show quoted text -
>
>
>
> Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what
> i had

however i still cannot seem to get the write syntax in c
> shell to get that output into a variable, is this something you would
> be able to assist me with
>

Posix shell:

var=${ORACLE_SID%?????}
echo "$var"

C-shell:

set var=`expr x"$ORACLE_SID" : x"$.*$....."`
echo "$var"

--
Michael Tosch @ hp : com

31/07/2007, 18h07

On 2007-07-31, DalUK wrote:
> Hello people

>
> i have been stuck for over a day now on this one bit and i hope
> someone out there can me.
>
> i have a c shell script and basically i want to get the following
> output into a variable for use further on in the script..
>
> the output i want is generated from the below command
>
> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
>
>
> obviously if there is a better way then please advise but i need to
> remove the last five characters from the ORACLE SID environment..

In a POSIX shell (bash, ksh, etc.), you can use parameter
expansion:

ORACLE_SID=${ORACLE_SID%?????}

Csh is not recommended for scripting.

--
Chris F.A. Johnson, author <http://cfaj.freeshell.org/shell/>
Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
===== My code in this post, if any, assumes the POSIX locale
===== and is released under the GNU General Public Licence

31/07/2007, 19h57

On 31 Jul, 17:38, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
wrote:
> DalUK wrote:
> > On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
> > wrote:
> >> DalUK wrote:
> >>> Hello people

> >>> i have been stuck for over a day now on this one bit and i hope
> >>> someone out there can me.
> >>> i have a c shell script and basically i want to get the following
> >>> output into a variable for use further on in the script..
> >>> the output i want is generated from the below command
> >>> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
> >>> obviously if there is a better way then please advise but i need to
> >>> remove the last five characters from the ORACLE SID environment..
> >>> kind regards
> >>> Dal
> >> Posix shells:
>
> >> echo "${ORACLE_SID%?????}"
>
> >> All shells:
>
> >> expr x"$ORACLE_SID" : x"$.....$"
>
> >> --
> >> Michael Tosch @ hp : com- Hide quoted text -
>
> >> - Show quoted text -
>
> > Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what
> > i had

however i still cannot seem to get the write syntax in c
> > shell to get that output into a variable, is this something you would
> > be able to assist me with
>
> Posix shell:
>
> var=${ORACLE_SID%?????}
> echo "$var"
>
> C-shell:
>
> set var=`expr x"$ORACLE_SID" : x"$.*$....."`
> echo "$var"
>
> --
> Michael Tosch @ hp : com- Hide quoted text -
>
> - Show quoted text -

Thats the puppy

thank you very very much... i can sleep tonight
now ;-)
regards
Dal

31/07/2007, 19h57

On 31 Jul, 17:38, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
wrote:
> DalUK wrote:
> > On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se>
> > wrote:
> >> DalUK wrote:
> >>> Hello people

> >>> i have been stuck for over a day now on this one bit and i hope
> >>> someone out there can me.
> >>> i have a c shell script and basically i want to get the following
> >>> output into a variable for use further on in the script..
> >>> the output i want is generated from the below command
> >>> echo $ORACLE_SID | awk '{printf("%s\n",substr($1,1,(length($1)-5)))}'
> >>> obviously if there is a better way then please advise but i need to
> >>> remove the last five characters from the ORACLE SID environment..
> >>> kind regards
> >>> Dal
> >> Posix shells:
>
> >> echo "${ORACLE_SID%?????}"
>
> >> All shells:
>
> >> expr x"$ORACLE_SID" : x"$.....$"
>
> >> --
> >> Michael Tosch @ hp : com- Hide quoted text -
>
> >> - Show quoted text -
>
> > Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what
> > i had

however i still cannot seem to get the write syntax in c
> > shell to get that output into a variable, is this something you would
> > be able to assist me with
>
> Posix shell:
>
> var=${ORACLE_SID%?????}
> echo "$var"
>
> C-shell:
>
> set var=`expr x"$ORACLE_SID" : x"$.*$....."`
> echo "$var"
>
> --
> Michael Tosch @ hp : com- Hide quoted text -
>
> - Show quoted text -

Thats the puppy

thank you very very much... i can sleep tonight
now ;-)
regards
Dal

31/07/2007, 11h16	#1
DalUK Messages: n/a Hébergeur:	for a newbie to c shell setting a variable from echo output Hello people i have been stuck for over a day now on this one bit and i hope someone out there can me. i have a c shell script and basically i want to get the following output into a variable for use further on in the script.. the output i want is generated from the below command echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' obviously if there is a better way then please advise but i need to remove the last five characters from the ORACLE SID environment.. kind regards Dal

31/07/2007, 12h02	#2
Michael Tosch Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output DalUK wrote: > Hello people > > i have been stuck for over a day now on this one bit and i hope > someone out there can me. > > i have a c shell script and basically i want to get the following > output into a variable for use further on in the script.. > > the output i want is generated from the below command > > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > > > obviously if there is a better way then please advise but i need to > remove the last five characters from the ORACLE SID environment.. > > kind regards > Dal > Posix shells: echo "${ORACLE_SID%?????}" All shells: expr x"$ORACLE_SID" : x"\(.....\)" -- Michael Tosch @ hp : com

31/07/2007, 12h02	#3
Michael Tosch Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output DalUK wrote: > Hello people > > i have been stuck for over a day now on this one bit and i hope > someone out there can me. > > i have a c shell script and basically i want to get the following > output into a variable for use further on in the script.. > > the output i want is generated from the below command > > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > > > obviously if there is a better way then please advise but i need to > remove the last five characters from the ORACLE SID environment.. > > kind regards > Dal > Posix shells: echo "${ORACLE_SID%?????}" All shells: expr x"$ORACLE_SID" : x"\(.....\)" -- Michael Tosch @ hp : com

31/07/2007, 12h04	#4
Michael Tosch Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output Michael Tosch wrote: > DalUK wrote: >> Hello people >> >> i have been stuck for over a day now on this one bit and i hope >> someone out there can me. >> >> i have a c shell script and basically i want to get the following >> output into a variable for use further on in the script.. >> >> the output i want is generated from the below command >> >> echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' >> >> >> obviously if there is a better way then please advise but i need to >> remove the last five characters from the ORACLE SID environment.. >> >> kind regards >> Dal >> > > Posix shells: > > echo "${ORACLE_SID%?????}" > > All shells: > > expr x"$ORACLE_SID" : x"\(.....\)" Oops, the latter should be expr x"$ORACLE_SID" : x"\(.*\)....." -- Michael Tosch @ hp : com

31/07/2007, 12h04	#5
Michael Tosch Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output Michael Tosch wrote: > DalUK wrote: >> Hello people >> >> i have been stuck for over a day now on this one bit and i hope >> someone out there can me. >> >> i have a c shell script and basically i want to get the following >> output into a variable for use further on in the script.. >> >> the output i want is generated from the below command >> >> echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' >> >> >> obviously if there is a better way then please advise but i need to >> remove the last five characters from the ORACLE SID environment.. >> >> kind regards >> Dal >> > > Posix shells: > > echo "${ORACLE_SID%?????}" > > All shells: > > expr x"$ORACLE_SID" : x"\(.....\)" Oops, the latter should be expr x"$ORACLE_SID" : x"\(.*\)....." -- Michael Tosch @ hp : com

31/07/2007, 12h41	#6
Maxwell Lol Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output DalUK <msn.dal@gmail.com> writes: > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' echo $ORACLE_SID \| sed 's/.....$//s'

31/07/2007, 12h47	#8
DalUK Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se> wrote: > DalUK wrote: > > Hello people > > > i have been stuck for over a day now on this one bit and i hope > > someone out there can me. > > > i have a c shell script and basically i want to get the following > > output into a variable for use further on in the script.. > > > the output i want is generated from the below command > > > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > > > obviously if there is a better way then please advise but i need to > > remove the last five characters from the ORACLE SID environment.. > > > kind regards > > Dal > > Posix shells: > > echo "${ORACLE_SID%?????}" > > All shells: > > expr x"$ORACLE_SID" : x"\(.....\)" > > -- > Michael Tosch @ hp : com- Hide quoted text - > > - Show quoted text - Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what i had however i still cannot seem to get the write syntax in c shell to get that output into a variable, is this something you would be able to assist me with thanks Dal

31/07/2007, 13h22	#10
google@kenbeer.info Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output On Jul 31, 6:16 am, DalUK <msn....@gmail.com> wrote: > Hello people > > i have been stuck for over a day now on this one bit and i hope > someone out there can me. > > i have a c shell script and basically i want to get the following > output into a variable for use further on in the script.. > > the output i want is generated from the below command > > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > > obviously if there is a better way then please advise but i need to > remove the last five characters from the ORACLE SID environment.. > > kind regards > Dal It sounds like you want to chop off the last five characters of $ORACLE_SID. First of all, you're not testing to see what happens if $ORACLE_SID is 5 characters or fewer. I'll assume you're doing that elsewhere. A simpler way to do what you want to do it this: echo $ORACLE_SID \| sed 's/.....$//' In other words, replace five characters anchored to the end of the string with null. Note that unlike the awk technique you used, if ORACLE_SID has fewer than 5 characters, it isn't changed. You still have a problem if ORACLE_SID is exactly 5 characters. To get the result into another variable, use backticks -> `` setenv NEWVAR `echo $ORACLE_SID \| sed 's/.....$//'` There are other ways of course, and I would recommend using a borne- shell like shell such as ksh or bash instead of csh. Good luck Ken Beer

31/07/2007, 17h38	#11
Michael Tosch Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output DalUK wrote: > On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se> > wrote: >> DalUK wrote: >>> Hello people >>> i have been stuck for over a day now on this one bit and i hope >>> someone out there can me. >>> i have a c shell script and basically i want to get the following >>> output into a variable for use further on in the script.. >>> the output i want is generated from the below command >>> echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' >>> obviously if there is a better way then please advise but i need to >>> remove the last five characters from the ORACLE SID environment.. >>> kind regards >>> Dal >> Posix shells: >> >> echo "${ORACLE_SID%?????}" >> >> All shells: >> >> expr x"$ORACLE_SID" : x"\(.....\)" >> >> -- >> Michael Tosch @ hp : com- Hide quoted text - >> >> - Show quoted text - > > > > Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what > i had however i still cannot seem to get the write syntax in c > shell to get that output into a variable, is this something you would > be able to assist me with > Posix shell: var=${ORACLE_SID%?????} echo "$var" C-shell: set var=`expr x"$ORACLE_SID" : x"\(.*\)....."` echo "$var" -- Michael Tosch @ hp : com

31/07/2007, 18h07	#12
Chris F.A. Johnson Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output On 2007-07-31, DalUK wrote: > Hello people > > i have been stuck for over a day now on this one bit and i hope > someone out there can me. > > i have a c shell script and basically i want to get the following > output into a variable for use further on in the script.. > > the output i want is generated from the below command > > echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > > > obviously if there is a better way then please advise but i need to > remove the last five characters from the ORACLE SID environment.. In a POSIX shell (bash, ksh, etc.), you can use parameter expansion: ORACLE_SID=${ORACLE_SID%?????} Csh is not recommended for scripting. -- Chris F.A. Johnson, author <http://cfaj.freeshell.org/shell/> Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress) ===== My code in this post, if any, assumes the POSIX locale ===== and is released under the GNU General Public Licence

31/07/2007, 19h57	#13
DalUK Messages: n/a Hébergeur:	Re: for a newbie to c shell setting a variable from echo output On 31 Jul, 17:38, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se> wrote: > DalUK wrote: > > On 31 Jul, 12:02, Michael Tosch <eed...@NO.eed.SPAM.ericsson.PLS.se> > > wrote: > >> DalUK wrote: > >>> Hello people > >>> i have been stuck for over a day now on this one bit and i hope > >>> someone out there can me. > >>> i have a c shell script and basically i want to get the following > >>> output into a variable for use further on in the script.. > >>> the output i want is generated from the below command > >>> echo $ORACLE_SID \| awk '{printf("%s\n",substr($1,1,(length($1)-5)))}' > >>> obviously if there is a better way then please advise but i need to > >>> remove the last five characters from the ORACLE SID environment.. > >>> kind regards > >>> Dal > >> Posix shells: > > >> echo "${ORACLE_SID%?????}" > > >> All shells: > > >> expr x"$ORACLE_SID" : x"\(.....\)" > > >> -- > >> Michael Tosch @ hp : com- Hide quoted text - > > >> - Show quoted text - > > > Hi, the echo "${ORACLE_SID%?????}" works and is much shorter than what > > i had however i still cannot seem to get the write syntax in c > > shell to get that output into a variable, is this something you would > > be able to assist me with > > Posix shell: > > var=${ORACLE_SID%?????} > echo "$var" > > C-shell: > > set var=`expr x"$ORACLE_SID" : x"\(.*\)....."` > echo "$var" > > -- > Michael Tosch @ hp : com- Hide quoted text - > > - Show quoted text - Thats the puppy thank you very very much... i can sleep tonight now ;-) regards Dal

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