I want to replace the following text
text := a \
b \
c
with the following one:
text := d \
e \
f
in bash file.
I have tried different versions of 'sed', but none of them worked e.g.:
old_path='text := a \\\n\t\tb \\\n\t\tc'
new_path='text := d \\\n\t\te \\\n\t\tf'
sed -i -e "s%old_path%new_path%g" text.txt
if you do not mind using Perl try:
~ ❱ perl -pe 's/ ((?=[a-z]).)/" ".chr(ord($1)+3)/eg' file
text := d \
e \
f
~ ❱
the ASCII code for your character is: 100, 101 and 102
Thus if you add 3 to them they from a b c become d e f
try with simple sed.
sed 's/a \\/d \\/;s/b \\/e \\/;s/c/f/' Input_file
Explanation: Simply I am using substitute option of sed by using s/text_which_needs_to_be_replaced/new_text. BY separating them with semi colon will make sure we could perform multiple substitutions. substitutions are made by as per your need. Kindly do let me know if you have any queries on same.
This might work for you (GNU sed):
sed '/^text := a \\/,/^\tc$/c\test := d \\\n\te \\\n\tf' file
Change the text in the range '/^text := a \\/,/^\tc$/ to the required values.
