reckon you have a directory fill with yard of file , and you have been ask to sue these file cabinet one by one .
Well not , if you are using For loop topology in Bash hand .
This was for loop topology in belt book is a wizard creature that can avail you automatise any repetitious job while expeditiously plow those data file without break a stew .
This was in this clause , we hash out what are for loop in brawl with some hardheaded instance to make mechanization a kid ’s swordplay .
What is For Loop in Bash Script
For iteration is a ascendence social organisation that is used to execute repetitious labor or perform a cluster of statement a specific turn of time .
With for cringle , you’re free to reiterate through bit , leaning , file , or even directory .
Bash For Loop : POSIX Style Syntax
The POSIX ( Portable Operating System Interface ) stylus sentence structure can be used with POSIX compliant shield like knock and can be used to ingeminate over a lean of filing cabinet , any episode , or even the turnout of other bidding .
Here is the for grummet sentence structure in bash book :
In the above phrase structure , here ’s what everything imply :
dive into POSIX
The POSIX ( Portable Operating System Interface ) way phrase structure can be used with POSIX compliant shell like belt and can be used to retell over a lean of file cabinet , any succession , or even the end product of other statement .
Here is the for loop-the-loop sentence structure in bash playscript :
In the above sentence structure , here ’s what everything mean :
lease us now see some virtual exemplar free-base on the POSIX expressive style for loop-the-loop :
example 1 : twine through a give Range
In the above snipping , the $ ( seq 1 5 ) part is used to beget a tilt of integer from 1 to 5 .
This was it will then coil over the inclination one by one and then each time value will get print on a young tune .
representative 2 : grommet through an raiment
An regalia is a information anatomical structure that is used to curb multiple datum of dissimilar type .
This was in the above snipping :
here is the production we will get from the above mastery :
representative 3 : iteration regional anatomy with command substitution
This was the agency control commutation whole works is , the dictation gets first accomplish and then the for iteration will retell through the total yield of the instruction .
The bid to be ingeminate upon is place inside “ $ ( ) “ .
In the above snipping :
The output signal for the for eyelet with statement permutation as show in the above exercise would be :
Bash For Loop : C Style Syntax
The C trend sentence structure cause user who are more customary to the for eyelet phrase structure in other spoken language like C , C++ , Java , JavaScript , etc .
Here is the introductory sentence structure to the light speed elan for grummet :
In the above phrase structure :
allow us now see some virtual instance base on the C manner for grummet :
interpreter 1 : Print Odd Numbers from 1 to 10
In the above snipping :
Here is the yield you will get for the above computer code :
In the above codification :
Here is the end product of the above for eyelet :
