Replace matches string in each line with the arrayvalue in shell


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# 8  
replace.sh:
Code:
#!/bin/bash
ext=new$$
for arg
do
  set 01 02 03
  changed=
  while IFS= read line
  do
    case $line in
    (*tcname*)
      echo "${line//tcname/$1}"
      shift
      changed=1
    ;;
    (*)
      echo "$line"
    ;;
    esac
  done <"$arg" >"$arg.$ext" &&
  [ -n "$changed" ] &&
  cp "$arg.$ext" "$arg"
  rm "$arg.$ext"
done

Code:
replace.sh file1


Last edited by MadeInGermany; 05-22-2019 at 03:21 PM.. Reason: Only rewrite if changed
This User Gave Thanks to MadeInGermany For This Post:
# 9  
Hi @MadeInGermany
How about replacing
Code:
rm "$arg.$ext"

with this ? Smilie
Code:
cat "$arg.$ext"
rm $_

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