WebThe is how the collapsed statement is read, if the expression is true (the number of arguments is not equal to two) then display the usage string and immediately exit the shell script. In other words, if the exit status of the test expression is 0 then perform the commands listed on the right side of the ampersands ("&&"). WebAug 20, 2008 · Which gives you the time in seconds. If you need to get the greater/lesser of the date strings, you can instead use the date command as you have it, pipe it through sort, and then use tail -1 (greater) or head -1 (lesser).

String difference in Bash - Stack Overflow

WebBash, grep between two lines with specified strings 2016-11-30 13:11:59 1 87 regex / bash / grep radim hruška

Using the not equal operator for string comparison

WebSep 13, 2024 · Compare Strings in Linux Shell Script. When creating a bash script, we might also be required to compare two or more strings & comparing strings can be a little tricky. For doing strings comparisons, parameters used are. var1 = var2 checks if var1 is the same as string var2; var1 != var2 checks if var1 is not the same as var2 WebMay 5, 2024 · How to Grep Multiple Patterns – Syntax. The basic grep syntax when searching multiple patterns in a file includes using the grep command followed by strings and the name of the file or its path. The patterns need to be enclosed using single quotes and separated by the pipe symbol. Use the backslash before pipe for regular expressions. WebThe thing is bash is not able to compare the strings it is always false. Any idea ? EDIT : Here is the output with the first answer : + STATUS='ON Master' ++ echo 'ON' Master + TEST='ON Master' + ' [' 'ON Master' == 'ON Master' ']' + echo CLUSTER OK MASTER CLUSTER OK MASTER. Still not working ON seems weird on line 3, plus in my bash it … radim havránek