Bash while Loop in One Line It is always a good practice to use fewer lines of code. The while loop in Bash also offers a one-liner structure. The syntax of Bash while loop as a one-liner is given below: while [condition]; do commands_to_execute; done Let’s implement the above e...
Here we look for the conditionigreater then5to become true. Until such time (i.e. anuntilbased loop), we will print (usingecho) our variableiand increase the same with one, alike to our previouswhilebased example. We can see how the syntax for theuntilcommand is very similar to thewh...
Find the Bash one-liners, snippets, tips and tricks you need to automate your tasks, troubleshoot problems, and get more done. Our one-liners and snippets are well-written, easy to understand, and come with detailed explanations that make it easy to lear
_repeat() { #@ USAGE: _repeat string number _REPEAT=$1 while (( ${#_REPEAT} < $2 )) ## Loop until string exceeds desired length do _REPEAT=$_REPEAT$_REPEAT$_REPEAT ## 3 seems to be the optimum number done _REPEAT=${_REPEAT:0:$2} ## Trim to desired length } repeat() { ...
; done while read -r line; do ...; done <myfile #If only one word a line, simply for line in $(cat myfile); do echo $line; read -n1; done #Loop through an array for i in "${arrayName[@]}"; do echo $i;done While loop,...
You can accomplish that by iterating a second list based on your first list through nested loops. This gets a little hard to follow when you're doing it as a one-liner, but it can definitely be done. Your nestedforloop gets executed on every iteration of the parentforloop. Be sure to...
$>whileread-riprest;doprintf'%s %s\n'"$rest""$ip";done<fileA Use Bash functions Functions in Bash are different from those written in Python, C, awk, or other languages. In Bash, a simple function that accepts one argument and prints "Hello world" would look like this: ...
A counter loop as shown above is not necessary helpful, but it shows some of the exciting possibility, for example to create simple one-liner bash calculator. Function Return A bash function can return a value via its exit status after execution. By default, a function returns the exit code...
while IFS=';' read -ra ADDR; do for i in "${ADDR[@]}"; do # process "$i" done done <<< "$IN" #2 713 Taken fromBash shell script split array: 从Bash shell脚本拆分数组: IN="bla@some.com;john@home.com" arrIN=(${IN//;/ }) ...
从bash命令行调用的python for循环一行程序产生无效语法，但列表解析工作正常Python中的语句可以是一个复合...