Expressions may be unary or binary, and are formed from the following primaries. bash definition: 1. to hit hard: 2. to criticize someone severely: 3. a party: . What does bash mean? 1. ; The statements that follow the then statement can be any valid UNIX command, any executable user program, any executable shell script, or any shell statement with the exception of fi. To bash is to hit very hard or to say unkind things about someone or something. The only real difference between [and test should be that [requires a ] after your arguments, whereas test does not. It is widely available on various operating systems and is a default command interpreter on most GNU/Linux systems. The first beta was released in 1989, and, as of this writing, has seen its most recent update in December 2020: version 5.1. if itself is a shell keyword, so you can find information about it with help if.if itself only branches based on whether the next command returns true ( 0 ) or false ( not zero ). The test and [commands determine their behavior based on the number of arguments; see the descriptions of those commands for any other command-specific actions.. In bash the options and behaviors are defined by bash. Bash Else If is kind of an extension to Bash If Else statement. In Bash else-if, there can be multiple elif blocks with a boolean expression for each of them. They otherwise work the same, [ -e foo ] is equivalent to test -e foo. It is also kind of a synonym for test. [ -d FILE] True if FILE exists and is a directory. bash on definition: 1. to continue doing something that is difficult, boring, or takes a long time: 2. to continue…. | Meaning, pronunciation, translations and examples [ -f FILE] True if FILE exists and is a regular file. Syntax of Bash Else IF – elif. [ -e FILE] True if FILE exists. Learn more. [ -g FILE] True if FILE exists and its SGID bit is set. If elif if ladder appears like a conditional ladder. of a compound command OR function name { ## ksh style works in bash command1 command2 } OR function name() { ## bash-only hybrid command1 command2 } One Line Functions Syntax. The name Bash is an acronym for Bourne-Again SHell, a pun on the name Stephen Bourne, creator of one of Bash's predecessors. The name is an acronym for the ‘Bourne-Again SHell’. Learn more. Bash Shell Scripting Definition Bash Bash is a command language interpreter. Here, The condition in the if statement often involves a numerical or string test comparison, but it can also be any command that returns a status of 0 when it succeeds and some nonzero status when it fails. Following is the syntax of Else If statement in Bash Shell Scripting. name() compound_command ## POSIX compliant ## see the bash man page for def. [ -b FILE] True if FILE exists and is a block-special file. Bash Else If. es v. tr. [ -c FILE] True if FILE exists and is a character-special file. Conditional expressions are used by the [[compound command and the test and [builtin commands. 2. Bash up definition: If someone bashes you up , they attack you violently and injure you. 6.4 Bash Conditional Expressions. In bash you can do help test to see all the options it supports. To strike with a heavy, crushing blow: The thug bashed the hood of the car with a sledgehammer. Primary Meaning [ -a FILE] True if FILE exists.