How to create an array of unique elements from a string/array in bash?
If I have a string “1 2 3 2 1” – or an array [1,2,3,2,1] – how can I select the unique values, i.e.
string
grep on a variable
Let’s say I have a variable
Extract date from a variable in a different format
Let me explain you the problem
What’s the purpose of adding a prefix on both sides of a shell variable comparison to a string literal?
I have encountered comparisions of variables to string literals multiple times over the years which had one character prefixing the variable and the literal, e.g.
Bash – Integer expression expected
I am making the check for update script for my theme
Bash – Continuous String Manipulation
#!/bin/bash FILE="$(basename "$1")" FILE="${FILE/%.jpeg/.jpg}" Is there anyway to glue these two lines together into a one-liner? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave … Read more
Test -n gives unexpected result
I understand test -n <expression> to return false if the expression evaluates to a string length of greater than 0. Why then does the following happen?
Split single string into character array using ONLY bash
I want to split 'hello' into h e l l o in an array using only bash, I could do it in sed with sed 's/./& /g' but I want to know how to split a string into an array in Bash when I do not know what the delimiter would be, or the delimiter is any single character. I don’t think I can use ${i// /} without some creativity because the delimiter is an unknown, and I don’t think that expression accepts regex. I tried using BASH_REMATCH with [[ string =~ ([a-z].).* ]] but it doesn’t work as I expected. What is the proper way to use only bash to accomplish a string.split() type of behavior? The reason is that I am trying to write the rev utility in all bash:
How can I set an environment variable which contains newline characters?
I’m trying to set an RSA key as an environment variable which, as a text file, contains newline characters.
Delete the last character of a string using string manipulation in shell script
I would like to delete the last character of a string, I tried this little script :