What is the -w (deadline) flag in ping for? I cannot find a description of it in the ping man page; only for -W, which takes seconds as a parameter. What is the difference between them, and how can I set a ping timeout (if host is not responding) to 200ms?
Is there a way to source a shell script into a namespace, preferably a bash shell script but I would look into other shells if they had this feature and bash didn’t.
#!/bin/bash FILE="$(basename "$1")" FILE="${FILE/%.jpeg/.jpg}" Is there anyway to glue these two lines together into a one-liner? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave … Read more
See the following examples and their outputs in POSIX shells:
I would like to use the same pipe for different applications, like in:
I do not understand when does a shell, lets say bash, get executed, which program runs bash initially first.
now i am user “lawrence.li” ,I can see directory “lijunda” with “read” privilege
I need to rename files in batch–the other questions I browsed don’t exactly address my problem. The names of my files are generated non-deterministically, so I can’t predict what they will be named. I do know that they will start with NORMAL and end with -lib*. I’d like to replace everything in between with some string X. For example,
I understand test -n <expression> to return false if the expression evaluates to a string length of greater than 0. Why then does the following happen?
I’ve been trying to install archlinux on xps one.
the screen doesn’t work because it has intel g45/g43 express chipset.
I had to use nomodeset option as mentioned in the installation guide.
Arch somewhat booted but i get an error: