bash for loop variable

相關問題 & 資訊整理

bash for loop variable

If the first character of parameter is an exclamation point (!), a level of variable indirection is introduced. Bash uses the value of the variable formed from the rest ... , Yes, that's because brace-expansion occurs before parameter expansion. Either use another shell like zsh or ksh93 or use an alternative ...,You should specify the increment with seq: seq $FROMHERE -1 1. ,Pax Diablo suggested a Bash loop to avoid calling a subprocess, with the additional .... If the shell variable x contains a value that forms a valid integer constant, ... , One way is using eval : for i in $( eval echo 0..$length} ) do echo "do something right $i" done. Note what happens when you set length=;ls or ..., How can I iterate bash for loop using a variable range of numbers in Unix or Linux or BSD or Apple OS X operating systems? You can use the ...,This way, you avoid the common problem of I set variables in a loop that's in a pipeline. ... There is no need to use cut , you can stick with pure bash solutions. ,#!/bin/bash ## declare an array variable declare -a array=("one" "two" "three") # get length of an array arraylength=$#array[@]} # use for loop to read all values ... , It's really easy, you can just redirect the output of the whole loop to a variable (if you want to use just one variable as stated): VARIABLE=$(for ..., You can use for loop like this to iterate with a variable $TOP : for ((i=1; i<=$TOP; i++)) do echo $i # rest of your code done.

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bash for loop variable 相關參考資料
Bash for loop on variable numbers - Stack Overflow

If the first character of parameter is an exclamation point (!), a level of variable indirection is introduced. Bash uses the value of the variable formed from the rest&nbsp;...

https://stackoverflow.com

bash variables in for loop range - Unix &amp; Linux Stack Exchange

Yes, that&#39;s because brace-expansion occurs before parameter expansion. Either use another shell like zsh or ksh93 or use an alternative&nbsp;...

https://unix.stackexchange.com

descending loop with variable bash - Stack Overflow

You should specify the increment with seq: seq $FROMHERE -1 1.

https://stackoverflow.com

How do I iterate over a range of numbers defined by variables in ...

Pax Diablo suggested a Bash loop to avoid calling a subprocess, with the additional .... If the shell variable x contains a value that forms a valid integer constant,&nbsp;...

https://stackoverflow.com

How to use variables in a bash for loop - Stack Overflow

One way is using eval : for i in $( eval echo 0..$length} ) do echo &quot;do something right $i&quot; done. Note what happens when you set length=;ls or&nbsp;...

https://stackoverflow.com

HowTo: Iterate Bash For Loop Variable Range Under Unix Linux ...

How can I iterate bash for loop using a variable range of numbers in Unix or Linux or BSD or Apple OS X operating systems? You can use the&nbsp;...

https://www.cyberciti.biz

Incrementing a variable inside a Bash loop - Stack Overflow

This way, you avoid the common problem of I set variables in a loop that&#39;s in a pipeline. ... There is no need to use cut , you can stick with pure bash solutions.

https://stackoverflow.com

Loop through an array of strings in Bash? - Stack Overflow

#!/bin/bash ## declare an array variable declare -a array=(&quot;one&quot; &quot;two&quot; &quot;three&quot;) # get length of an array arraylength=$#array[@]} # use for loop to read all values&nbsp;.....

https://stackoverflow.com

Store for loop results as a variable in bash - Stack Overflow

It&#39;s really easy, you can just redirect the output of the whole loop to a variable (if you want to use just one variable as stated): VARIABLE=$(for&nbsp;...

https://stackoverflow.com

Writing a bash for-loop with a variable top-end - Stack Overflow

You can use for loop like this to iterate with a variable $TOP : for ((i=1; i&lt;=$TOP; i++)) do echo $i # rest of your code done.

https://stackoverflow.com