very simple substitution

[cbsm]

Hello,
I have to write a very simple shell (I am not used to this at all).
I used grep to put a line from a file in a variable like so :
Suivi_Id=$(grep "Suivi_Id" ${FILE})

echo $Suivi_Id prints : Suivi_Id123

I want only 123

so I tried (and tried, and tried...)

for example : Suivi_Id=${$Suivi_Id:8}
or Suivi_Id=${Suivi_Id:8}

result (both cases) : bad substitution

I also tried
l_Suivi=`expr length $Suivi_Id`
Suivi_Id= `expr substr $Suivi_Id 8 $(l_Suivi)`
result (both lines) expr: syntax error

I tried with $ or not, with {or( or not ...

I know it must be some very simple and stupid thing ...
Thank you !

 

[KenCunningham]

Hi. You might find few ideas and variations in:

Thread822-811273

HTH.

All I ask of you
Is make my wildest dreams come true

 

[cbsm]

Thank you !
I tried a few, but they are not working either - or better said I can't make them work !
In the thread they are printing the result.
i need the result in a variable.
For example I tried echo "$Suivi_Id" | cut -c9-30
(this is not exactly what I want, but at this stage woud be OK)
this works perfectly
But how do I do something like
Suivi_Id = "$Suivi_Id" | cut -c9-30
here : error Suivi_Id=123: not found
I tried
Suivi_Id = `"$Suivi_Id" | cut -c9-30}`
(same error)
and
Suivi_Id = {"$Suivi_Id" | cut -c9-30}
(cut: invalid character in range)

[I liked the expression like so :Suivi_Id=${Suivi_Id:8}
because I need everything BUT the 8 first charchters - but any solution will do]

 

[KenCunningham]

Suivi_Id = `"$Suivi_Id" | cut -c9-30}`

Is that a direct paste? If so, lose the extraneous } at the end.

All I ask of you
Is make my wildest dreams come true

 

[cbsm]

Thank you - but this was only an error in my post ...
Should read : `"$Suivi_Id" | cut -c9-30`

 

[KenCunningham]

Maybe try:

`echo "$Suivi_Id" | cut -c9-30`

All I ask of you
Is make my wildest dreams come true

 

[cbsm]

I tried ....
again an error message ...
123: not found
(123 is the result I am waiting for - but $Suivi_Id has still the wrong value)

 

[feherke]

Hi

No idea what shell and tools you use...

[blue]master #[/blue] Suivi_Id=Suivi_Id123
[blue]master #[/blue] Suivi_Id=${Suivi_Id:8}
[blue]master #[/blue] echo $Suivi_Id
123
[blue]master #[/blue] Suivi_Id=Suivi_Id123
[blue]master #[/blue] Suivi_Id=`echo $Suivi_Id | cut -c9-`
[blue]master #[/blue] echo $Suivi_Id
123
[blue]master #[/blue] Suivi_Id=Suivi_Id123
[blue]master #[/blue] Suivi_Id=`echo $Suivi_Id | sed 's/.\{8\}//'`
[blue]master #[/blue] echo $Suivi_Id
123

Feherke.

http://rootshell.be/~feherke/

 

[cbsm]

I am using ksh

 

[cbsm]

Just tried again - must have writen something wrong :
Suivi_Id=`echo "$Suivi_Id" | cut -c9-30` is working !

Many, many thanks !

 

[feherke]

Hi

With [tt]ksh[/tt] the first ( in my above list does not work, but the [tt]cut[/tt] and [tt]sed[/tt] solutions should work regardless the shell. For [tt]ksh[/tt] :

[blue]master #[/blue] Suivi_Id=Suivi_Id123
[blue]master #[/blue] Suivi_Id=${Suivi_Id#????????}
[blue]master #[/blue] echo $Suivi_Id
123

Feherke.

http://rootshell.be/~feherke/

 

[kHz]

Not in front of a server to test, but these should work with ksh93:

var=Suivi_Id123
print ${var##*[Aa-Zz]}
print ${var:8:3}