[Bash] for loop The basic syntax of a for loop in Bash is: forvariableinlistdocommandsdone Examples Example 1: Iterating Over a List of Words #!/bin/zshforwordinapple banana cherrydoecho"The word is:$word"done
Three-expression bash for loops syntax This type of for loop share a common heritage with the C programming language. It is characterized by a three-parameter loop control expression; consisting of an initializer (EXP1), a loop-test or condition (EXP2), and a counting expression (EXP3). f...
syntax: until expression do commands #body of the loop done 在上面的 bash until 语法中: where until, do, done 是关键字 表达式 任何条件表达式 Bash until Example 5. 监控日志文件 此示例监视日志文件的大小,一旦日志文件大小达到 2000 字节,它将获取该日志文件的副本。 $ cat monitor.sh file=/tmp/l...
For example, you can run UNIX command or task 5 times or read and process list of files using a for loop. A for loop can be used at a shell prompt or within a shell script itself. for loop syntax Numeric ranges for syntax is as follows: for VARIABLE in 1 2 3 4 5 .. N do c...
Bash For Loop Syntax for varname in list;do command1;command2;done or for varname in list do command1 command2 ... done or for var in $(cat file1);do command1;command2;done or for var in $(cat file1) do command1 command2 ... done or for variable in...
Commonly, the Bash For Loop is leveraged for various tasks such as to count files or also look for information. For instance, if you want to execute an instruction five times, it is best to run the for loop syntax rather than typing the same code five times. New programmers often don’...
Basic structure of the for loop First, let's talk about the basic structure of a for loop, and then we'll get into some examples. The basic syntax of a for loop is: for <variable name> in ;do <some command> $<variable name>;done; The variable name will be the variable you speci...
syntax:until expressiondocommands #bodyofthe loop done 在上面的 bash until 语法中: where until, do, done 是关键字 表达式 任何条件表达式 Bash until Example 5. 监控日志文件 此示例监视日志文件的大小,一旦日志文件大小达到 2000 字节,它将获取该日志文件的副本。
#!/bin/bash for i in {1..5} do echo "Welcome $i times" done This is from Bash For Loop Examples In Linux Bash v4.0+ has inbuilt support for setting up a step value using {START..END..INCREMENT} syntax: 代码语言:txt AI代码解释 #!/bin/bash echo "Bash version ${BASH_VERSION}....
The syntax for this loop is as follows: Different ways to use bash for loop There are two options that you can use to interpret this loop. Moreover, the result will be the same in both cases, so choose what is most suitable for you and proceed. ...