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Counting all .class files

I want to count all .class file in my project directory. I am working on ubuntu. I can list all the class file like this – It lists a lot of .class files. But I want to know the count of these .class files. Is there any way to do this in linux. Thanks. Answer Use wc -l. wc stands

command blkid don’t show my partitions UUID

I’m using Ubuntu. command blkid or blk /dev/sda2 in LPIC-1 module 104.3 (mounting and unmounting). but these commands don’t show me the expected results. blkid is installed and also I can see man blkid !!! Could you guide me to fix this? Answer Run sudo blkid After that you will be able to get the…

execute code only while sys.argv[1] exist

I have this code: and i want execute this piece of code only while sys.argv[1] is exist: if i only start the program without an arguments (python program.py) it’s print this text: I tried “if sys.argv == 1” but doesnt worked. Any solutions? Thanks Answer Now your program will terminate entir…

How to abort if command fails in Unix shell?

I’m not very great with shell scripting and still couldn’t find a solution to this. I want to run a command gulp tslint and if it returns errors, abort the script. So far I tried gulp tslint || exit 1 with no success. I think it somehow is returning true, even though it has errors when i run it on

how to grep lines according to 6th field contents

I would like to know how to filter lines according to the mem usage: I would like to be able to find only the PIDs that (RES mem usage) exceed 5GB Explicitly, I have the following lines and I’d like to grep only the lines where the 6th field is larger than 5 GB EDIT: Note that sorting is not

C: Trying to implement unnamed pipes

I’m trying to make a program that simlutates the terminal’s nameless pipes. For example, if I want to run the command: ls –l | grep ‘10’ would be: ./pipes ls -l – grep ’10’ (I use – instead of |). However, my program doesn’t work because execvp fails (bad adress). Thi…