SHELL:
KSH
you can use == or = to compare string
bash: if you use "==" will lead to syntax errors so be cautious,we have to use only "=" in this case.
Another speciality about = operator is it can be used for both string and numbers.
and can use -eq for only comparing numbers
And -eq if used for compring strings,it will return syntax error.
PERL
it is just the opposite what you use in shell
eq can be used to compare only string
= can be used for only numbers
Though = may seem to work for strings it will always return true.So be Cautious.
KSH
you can use == or = to compare string
bash: if you use "==" will lead to syntax errors so be cautious,we have to use only "=" in this case.
Another speciality about = operator is it can be used for both string and numbers.
and can use -eq for only comparing numbers
And -eq if used for compring strings,it will return syntax error.
PERL
it is just the opposite what you use in shell
eq can be used to compare only string
= can be used for only numbers
Though = may seem to work for strings it will always return true.So be Cautious.
