bash_n_examples/bash/variable/pref.sh

   1 A="123\n"
   2 A=${A/%/321\\n}
   3 echo -ne "$A"
   4 #suffix
   5 #${ARCHIVE/%/asd}
   6 #prefix
   7 #${ARCHIVE/#/asd}
   8 A="@123@321@abc@cba@"
   9
  10 [[ "$A" =~ \#321\# ]] && echo match
  11 [[ "$A" =~ @321@ ]] && echo match
  12 [[ "$A" =~ "@321@" ]] && echo match
  13 A=${A//@/\\n}
  14 echo -ne "$A"
  15 echo -ne "*$A*\n"