How can I “grep” patterns across multiple lines?
It seems I am misusing grep/egrep.
regular-expression
Splitting text files based on a regular expression
I have a text file which I want to split into 64 unequal parts, according to the 64 hexagrams of the Yi Jing. Since the passage for each hexagram begins with some digit(s), a period, and two newlines, the regex should be pretty easy to write.
find words with all vowels in order from a file
I have a large dictionary file with 300,000+ words in it and I’m trying to find all words with the vowels aeiou in that order and have only exactly 5 vowels. My current attempt does not seem to be working and for the life of me I don’t understand why.
Using regex inside if clause in bash
Look at this if block:
Checking if an input number is an integer
I’m trying to check if an input is an integer and I’ve gone over it a hundred times but don’t see the error in this. Alas it does not work, it triggers the if statement for all inputs (numbers/letters)
Bash =~ regex and https://regex101.com/
Using https://regex101.com/ I built a regular expression to return the first occurrence of an IP address in a string.
sed one-liner to delete everything between a pair of brackets?
I am working with some text that is full of stuff between brackets [] that I don’t want. Since I can delete the brackets myself, I don’t need the one-liner to do that for me, but I do need a one-liner that will remove everything between them.
Renaming files to have lower case extensions with ‘rename’
I’m trying to currently rename a large set of files and have been using quite kludgy methods to do so, such as:
Shell test to find a pattern in a string
I just wanted to ask whether there is any command which would work on common shells (bash, dash, kornshell)? It is supposed to check if the line variable contains any part of the path.
Search and replace strings that are not substrings of other strings
I have a list of replacements like so: