Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment. This way, you don’t have to look for it in a specific place on the system, as those paths may be in different locations on different systems. As long as it’s in your path, it … Read more
The very first alias I made once I started customizing my profile in PowerShell was ‘which’. To add this to your profile, type this: The `n at the start of the last line is to ensure it will start as a new line.
If your source directory is set in quotes, then make sure that the * is outside the quotes, i.e. or
You could sum the column 57 of your file, and print it using
C++20 introduced a guarantee that time_since_epoch is relative to the UNIX epoch, and cppreference.com gives an example that I’ve distilled to the relevant code, and changed to units of seconds rather than hours: Using C++17 or earlier, time() is the simplest function – seconds since Epoch, which for Linux and UNIX at least would be the UNIX epoch. Linux manpage here. The … Read more
I want to print the value ‘½’ in a file. I searched for the ascii value of this as Alt+(ascii Value) will give you the same. To my surprise I found 2 ascii values for this symbol in various sites. One is 171 and the other is 189. I tried to write this symbol by … Read more
In deploying to a new (Solaris 9) environment recently, one of the steps was to copy a set of files and directories to their new location and then to apply the group UID bit (using “chmod -R g+s”) to all files in the directory tree giving a mode of -rwxr-s— to everything. The result was … Read more
In your terminal, type: replacing the username, host, remote filename, and local directory as appropriate. If you want to access EC2 (or other service that requires authenticating with a private key), use the -i option: From: http://www.hypexr.org/linux_scp_help.php
Have you had a look at getcwd()? Simple example:
“Resource temporarily unavailable” is the error message corresponding to EAGAIN, which means that the operation would have blocked but nonblocking operation was requested. For send(), that could be due to any of: explicitly marking the file descriptor as nonblocking with fcntl(); or passing the MSG_DONTWAIT flag to send(); or setting a send timeout with the SO_SNDTIMEO socket option.