UNIX : How to create many files quickly

Its easy to create many file quickly with touch command

 >touch file{1..100}.txt

The touch command is used to create file or change last access timestamp of the existing file to current time of the day.In the above example 100 files with .txt will be created in current directory with 0 bytes.You can change the value of 100 to any number you like. Another variations

 >touch {1.txt,2.txt,3.txt}

It will create 3 files as specified

 >touch {A..Z}.txt

It will create files with name as alphabets from A to Z

>touch {A..Z}_{1..10}.txt

It will create files with name as alphabets from A to Z suffix with 1 to 10

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.

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")

Scala

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

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