Bash multiple strings replacements on variable Stack Overflow
Bash multiple strings replacements on variable Stack Overflow multiple strings replacements on variable duplicate Ask ion Asked 5 years 7 months ago Modified 6 months ago Viewed 3k times 3 This ion already has answers here Can var parameter expansion expressions be nested in bash 15 answers Closed 5 years ago
How to search and replace for multiple words in one shot, 1 I need to search and replace multiple words For example in my file I want to search for any name of week days that appears with a comma after it Sat or Sun or Mon or Tue or Wed or Thur or Fri to a name without comma Saturday or Sunday or Monday or Tuesday or Wednesday or Thursday or Friday I know how to do this one by one
Strings replace in bash using multiple lines pattern
How can I do a string replace in bash using multiple lines pattern To illustrate I present a pseudocode TARGET STR N magic quotes gpc On D Increase your server security by setting magic quotes gpc to on
In a file to find and replace change multiple strings in a line with , To process text from within a shell script you d call a text processing tool such as sed awk or perl to process the whole input not several invocations for inadequate tools such as read or echo on each line of the output Here I d use regular expressions to match the input and extract the relevant fields and reformat as you like
Bash Replacing some characters in a string with another character
Bash Replacing some characters in a string with another character , 1 tr xyz will replace and too The argument should be simply a list of characters though ranges like a z are okay and in some implementations POSIX character classes like digit tripleee Jul 26 2016 at 3 54 Add a comment 6 Answers Sorted by 538 echo string tr xyz
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How to Replace Substring in Bash Natively Linux Handbook
How to Replace Substring in Bash Natively Linux Handbook If you want to replace part of a string with another this is how you do it main string search term replace term Create a string variable consisting of the line I am writing a line today without the quotes and then replace today with now
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I suppose one solution is to replace first A or B for another character not present in the string then replace that character This way the switching between A and B is avoided Although a chain of sed s is needed echo AYB sed e s A g e s B AA g e s BB g BBYAA Text processing Is there a way to do multiple replacements with sed . Suppose I have abbc string and I want to replace ab bc bc ab If I try two replaces the result is not what I want Here is a variation on ooga s answer that works for multiple search and replace pairs without having to check how values might in case someone needs to replace windows paths to Windows Subsystem for Linux WSL For example to search all 3 digit numbers and replace them with the string number you would use sed i s b 0 9 3 b number g file txt number Foo foo foo foo bin bash demo foobar number Another useful feature of sed is that you can use the ampersand character which corresponds to the matched pattern
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