While loop read file unix

Without the last newline your prompt should be like so: Code :. Join Date: Oct Last edited by ctsgnb; at AM.. Problem with while loop reading every line of a text file. How to handle "read" inside while loop reading every line? Reading line by line from live log file using while loop and considering only those lines start from. Reading line in while loop. Hello Team, i have to read line by line in a while loop, and the input file has:.

The script will start cppunit test application to run unit tests. While loop is not reading next line in the file when IF condition is used. Hi Guys I am new to scripting. Please forgive for asking basic questions.

I want to write a script to check whether the logs are getting updated in last 15 mins. When reading a csv file, counter to read 20 lines and wait for minute then read next 20 till end. Hello All, i am a newbie and need some help when reading a csv file in a bourne shell script. I want to read 10 lines, then wait for a minute and then do a reading of another 10 lines and so on in the same way. I want to do this till the end of file. Any inputs are appreciated I know I should be able to see a way of doing this easily, but my brain just won't engage.

I have a script working on an embedded device that checks to see if an item is in a blacklist before performing some actions. At the moment the code reads thus The while loop is used to repeat a section of code an unknown number of times until a specific condition is met. For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1.

You can make use of a while loop and read the contents from the given file line-by-line. To do that, first, open the file in read mode using open function. The file handler returned from open , use it inside while —loop to read the lines. Python readline function is used inside while-loop to read the lines. In Unix to view the file, we can use vi or view command. If you use view command then it will be read only.

That means you can view the file but you will not be able to edit anything in that file. To read a text file in Python, you follow these steps: First, open a text file for reading by using the open function. Improve this question. I can't actually reproduce the problem when running the script as-is, but in any case you have other problems with your script.

Not tested, but I think your problem is that the pipe will be done after the while loop? As presented, that code snippet would print the second word from each line produced by the while Add a comment. Active Oldest Votes. As other have pointed out, awk redirection occur later. Improve this answer. Archemar Archemar Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.