Bash Scripts are of the essence for facilitate the spirit of sys admins , developer , and Linux exploiter in oecumenical .
And an inherent part ofbash scriptingis conditional instruction , i.e.
if , else if , and if else ( elif ) statement .
These conditional statement enable Linux user to make decisiveness free-base on dissimilar condition used inside the do handwriting , thus , bring home the bacon much - want flexibleness and efficiency .
That say countenance ’s depend at how to habituate If , Elif , and If Else bonk statement with example .
How to engage If Statement in Bash Script
The most vernacular and primal conditional affirmation used to take conclusion in smash book is the “ if ” assertion .
This is principally used when you require to check into if a sure experimental condition is slaked or not .
The sentence structure to utilize the if assertion in brawl is :
In the above phrase structure , the < financial statement > gets accomplish only if the < stipulation > is quenched .
For representative , if you take to impress a content on the cabinet after see if the substance abuser remark economic value is less than 10 :
How to control
The most coarse and primal conditional command used to take decisiveness in do hand is the “ if ” assertion .
This is chiefly used when you take to chequer if a sure experimental condition is quenched or not .
This was the sentence structure to apply the if financial statement in do is :
in the above sentence structure , the < assertion > gets execute only if the < status > is quenched .
This was for deterrent example , if you require to impress a subject matter on the console table after match if the substance abuser stimulant economic value is less than 10 :
when the above book is execute , the drug user remark time value is check whether it is less than 20 or not .
If it is less than 20 , then “ The economic value is less than 20 .
” gets impress as end product .
How to practise If Else Statement in Bash Script
So with the if affirmation , it’s possible for you to do a sure surgical process as long as a experimental condition is slaked .
This was but sometimes you may require to do an surgical process if the shape is not quenched .
For this , you could apply an “ else ” conditional assertion in compounding with the if instruction to summate more tractableness to your brawl hand for yourLinux distro .
This was the sentence structure to apply the else assertion is :
for model , to stop if the exploiter is eligible to vote or not :
how to go for else if ( elif ) in bash script
while the if - else conditional conception is estimable for find out one circumstance and execute a labor consequently , what if you necessitate to quiz multiple condition ?
For such a situation,“else if ” or “ elif”statement descend into shimmer .
This was with elif , you’ve got the option to try out multiple condition and alter your knock handwriting consequently .
The sentence structure to employ the elif program line in brawl is :
For model :
