Bash regex replace. Take a look at the Bash man page.

Bash regex replace. @dutCh's answer shows that bash does have something similar to the "ternary operator" however in bash this is called the "conditional operator" expr?expr:expr (see man bash goto section "Arithmetic Evaluation"). com - In bash, is it possible to use an integer variable in the loop control of a for loop? An "and" operator for an "if" statement in Bash Asked 12 years, 10 months ago Modified 1 year, 2 months ago Viewed 982k times Feb 10, 2010 · How do I compare a variable to a string (and do something if they match)? Feb 9, 2016 · The double-brace keyword is a bash expression, and will not work with other POSIX shells, but it has some benefits, as well, such as being able to do these kinds of operations more readably. It allows you the ability to generate multi-line data input as one continuous string. This notation is part of what's called a here documents & here strings. It depends on the Test Construct around the operator. So, your example is parsed as $ (echo this || echo that) && echo other And thus only the left-hand side of the or runs, since that succeeds the right-hand side doesn't need to run. 3 in the manual for details. Take a look at the Bash man page. If you use ((…)), you are testing arithmetic equality with == as in C: $ (( 1==1 )); echo $? 0 $ (( 1==2 )); echo $? 1 (Note: 0 means true in the Unix sense and a failed test results in a non-zero number. The mere existence of $2 will answer your question, as well. ) Using -eq inside of double parentheses is a syntax 8 In bash, && and || have equal precendence and associate to the left. Your options are double parentheses, double brackets, single brackets, or test. Jan 18, 2017 · Bash scripting missing ']' [closed] Asked 12 years, 5 months ago Modified 5 years, 1 month ago Viewed 196k times. Of course, there are a lot of ways to test the number of arguments passed. The variation you're asking about is called a here string. At any rate, man bash returns a huge file, which is 4139 lines (72 pages) long. Oct 4, 2008 · Related discusions: bash for loop: a range of numbers and unix. 2. excerpt from Bash man page Here Strings A variant of here documents, the format is: <<<word The word is expanded and supplied to the command on Jan 27, 2017 · I realize you said “read the bash man pages” but at first, I thought you meant read the man pages within bash. See Section 3. stackexchange. Keep in mind the bash "conditional operator" is tricky and has some gotchas. vxsb pnxiijz pzfo kgp hemzd ihvnz chz igxfvpof vmk lclszjep