The content of the file filea.txt is as follows.
———
case $HOSTNAME in
aaa)
DS_PARM_VALUE_SET=vsDev
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
bbb)
DS_PARM_VALUE_SET=vsQA
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
ccc)
DS_PARM_VALUE_SET=vsProd
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
*)
DS_PARM_VALUE_SET=vsDev
APT_Configurations_File=/appl/infoserver/Server/Configuarations/2node.apt

;;
esac
———

Now aaa has to be changed to ‘DEV’, bbb has to be changed to ‘QA‘ and ccc has to be changed to ‘PROD’.

The new file should be as follows.
———
case $HOSTNAME in
‘DEV’)
DS_PARM_VALUE_SET=vsDev
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
‘QA‘)
DS_PARM_VALUE_SET=vsQA
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
‘PROD’)
DS_PARM_VALUE_SET=vsProd
APT_Configuration_File=/appl/infoserver/Server/Configurations/2node.apt

;;
*)
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