Echo is used in the Linux script, here is here to introduce some simple usage between ECHO and strings. 1, Echo normal string directly print this string $ Echo ABC output: ABC2, Echo variable print variable value $ ABC = "Date" $ Echo $ ABC output: Date3, Echo 'normal string' Direct printing this character Strings $ Echo 'ABC' Output: ABC4, Echo 'Variable' Think the variable name is a normal string, directly promise the variable of $ Echo '$ ABC' output: $ ABC5, Echo "normal string" Direct print characters String $ Echo "ABC" output: ABC6, ECHO "Variable" print variable, with the ECHO variable of the same $, "$ abc" output: Date7, Echo `Ordinary string` Perform a normal string command $ Echo `ABC` Out: -bash: ABC: Command Not Found actually similar to the terminal execution" ABC ", Echo is printing its output 8, echo ` variable `$ Echo` $ abc` Output: Tue Nov 23 19 : 07: 49 CST 2004 # Execute Date results
