UNIX : Using IF in bash

The IF statement is used to test the given condition and based on the truth value of that the expression the statement followed is executed.Otherwise the else part is executed.

The basic structure of if is as follows.

If [[ expression ]];then

expression

elif [[expression ]];then

expression

else

expression

1) Integer comparison

2) String comparison

3) Using multiple conditions in IF statement

4) Compare regular expression in bash

Comments

UNIX : How to get record count from zipped file

Sometimes we may need to get records count from file . For that we can use wc -l , command with file name. In some situation the file will be in compressed format . wc -l will not directly work with zipped files . In this case we can do zcat the file and pipe the word count command with it. Example : Let say we have a file cricketData.dat.gz To get word count from the file use : zcat cricketData.dat.gz | wc -l This will give the record count.

Scala

Scala is a object oriented functional type programing language. All variables declared in scala is considered as objects.

Excel : How to pad zeros

Today I got a requirement to format the number in excel cell - to left pad number with zeros.i find the following function very useful to do it. In case one to make the number left padded with "0" s give the formula =TEXT(A1,"0000") In case two even more enhanced form to make it left padded with "0" and add two decimal places give the formula as =TEXT(A2,"0000.00")

Tech Info Talks

Search This Blog