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Shell Programming and Scripting

Replace a string based on input

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# 8  
Old 08-20-2019
Not sure (as your requirement is still unclear) if this one, using recent bash's extglob option and some "parameter expansions", gets you somewhere:


Code:
shopt -s extglob
rplst="nz|usa|uk"
for ctry in de nz usa uk aus aut nl
  do    VLD=${ctry/${ctry/@($rplst)}} 
        SD=${VLD:+diff}
        final_var=${SD:-source}_table_${VLD:-aus}_final
        echo $final_var
done
source_table_aus_final
diff_table_nz_final
diff_table_usa_final
diff_table_uk_final
source_table_aus_final
source_table_aus_final
source_table_aus_final

Last edited by RudiC; 08-20-2019 at 09:07 AM..
# 9  
Old 08-20-2019
Let me be clear once again as per below code, i am getting ctry_input as input to my shell program. Where in if i get countries like nz,usa,uk then source should be replaced as diff

Code:
diff_table_nz_final

Apart from nz,usa,uk it should be

Code:
source_table_<any_other_country>_final

any_other_country if eg if i pass as aus then it would source_table_aus_final

Code:
final_var=$(echo "source_table_@ctry_final"| sed -e "s/\@ctry/${ctry_input}/")

Basically would need to tweak the above code
# 10  
Old 08-20-2019
Code:
for ctry in de nz usa uk aus aut nl
  do    VLD=${ctry/${ctry/@($rplst)}} 
        SD=${VLD:+diff}
        final_var=${SD:-source}_table_${ctry}_final
        echo $final_var
done
source_table_de_final
diff_table_nz_final
diff_table_usa_final
diff_table_uk_final
source_table_aus_final
source_table_aut_final
source_table_nl_final

# 11  
Old 08-20-2019
Thanks RudiC for your help. But is there a way to tweak the existing code itself


Code:
final_var=$(echo "source_table_@ctry_final"| sed -e "s/\@ctry/${ctry_input}/")

why i am saying is because you if i give other than in that case only ctry only needs to be replaced

Code:
echo "other_table_@ctry_final"

I am trying to achieve madeingermany's method
Code:
final_var=$(echo "source_table_@ctry_final" | case $ctry_input in nz|usa|uk) sed "s/@ctry/$ctry_input/s/source_table/diff_table/";;*) sed "s/@ctry/$ctry_input/" ;; esac )

Last edited by Master_Mind; 08-21-2019 at 01:46 AM..
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