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How to substitute multiple patterns in Linux SED?
You can use any one of the following sed substitute find and replace multiple patterns: sed -e ‘s/Find/Replace/g’ -e ‘s/Find/Replace/g’ <<<“$var” sed -e ‘s/Find/Replace/g’ -e ‘s/Find/Replace/g’ < inputFile > outputFile out=$(sed -e ‘s/Find/Replace/g’ -e ‘s/Find/Replace/g’ <<<“$var”)
When to use-e or-R in SED?
You’re falling victim to the greedy match. Have a go with this: Only tried it on your sample and one other contrived example, so it might not be perfect. I also prefer using -E to avoid escaping parens which just make it messy. If you are using a BSD based sed it’ll be a different (-r or -R, I cannot remember and my BSD box isn’t up right now).
Can a SED be used with a BSD based SED?
If you are using a BSD based sed it’ll be a different (-r or -R, I cannot remember and my BSD box isn’t up right now). OK. The following should work with any sed that conforms to the standards:
Can you use sed substitution with Shell variables?
We often do text substitution using compact sed one-liners. They’re pretty convenient. However, when we execute sed substitution with shell variables, there are some pitfalls we should be aware of. In this tutorial, we’ll take a closer look at some common mistakes made using sed substitution with shell variables, and we’ll offer some solutions.
How to get SED to recognize a$ Var as an environment variable?
How can I get sed to recognize a $var as an environment variable as it is defined in the shell? Your two examples look identical, which makes problems hard to diagnose. Potential problems: $PWD may contain a slash, in which case you need to find a character not contained in $PWD to use as a delimiter.
Can a variable be expanded within single quote in SED?
Shell variables will not get expanded within single quotes. Therefore, the quick fix would be using double quotes in the sed command to allow shell variable expansion: Now, let’s test the solution.sh script once again: Good! We’ve filled the date and time in the right place. Next, let’s fill the JAVA_HOME path in the file.
How to change Ping to true in SED-Unix?
You can simply toggle with: sed -i -E ‘/^SUT_INST_ (PING|EXAMPLES)=/ {s/false/true/;t;s/true/false/;}’ infile This will change true to false or false to true depending on the current value.
How to replace a string with a SED?
Almost any character should work, but be careful with the characters that need escaping in your environment, sed, etc. depending on how you intend to use the results. If replacing the string by Variable, the solution doesn’t work. The sed command need to be in double quotes instead on single quote.
Can you use grep to search multiple strings?
You can grep multiple strings in different files and directories. The tool prints all lines that contain the words you specify as a search pattern. In this guide, we will show you how to use grep to search multiple words or string patterns.