... expr2Check whether either of the two expressions is truefile1 -nt file2Check whether the first file is newer than the second file (using the modification timestamp)66Chapter 3: Using the Shell 82935c03.qxd:Toolbox ... process list. The last line displays the word bash:followed by the pathto the bash man page, and then displays only the path to the man page (the secondelement on the line). Using backticks, ... programming.Although the shell used most often with Linuxsystems is called the Bourne Again Shell (bash),other shells are available as well (such as sh, csh,ksh, tcsh, and others). In many cases, these shells,such...