Gaurav Masand

The which command shows the path of the executable that will run when you type a command name. It is useful when multiple versions of a tool may be installed. Basic use If the command is found in your PATH, which prints the full path. If nothing is printed, the command may not be installed … Read more

The nice command starts a program with a modified scheduling priority. It is useful when you want a background task to be less aggressive with CPU usage. Run a command with lower priority Example Higher nice values mean lower priority. To adjust a process that is already running, use renice.

cdecl and c++decl translate complicated C and C++ declarations into English and can also generate declarations from plain-language descriptions. They are useful when pointer, function-pointer, or nested type syntax becomes hard to read. Interactive mode cdecl explain int (*signal(int, int (*)(int)))(int) declare p as pointer to integer quit c++decl uses C++ terminology and syntax where … Read more

A concise cdecl reference for understanding and constructing complex C type declarations.

The install command copies files while setting ownership, permissions and target directories in one step. It is commonly used in build scripts and deployment tasks. Copy a file with permissions Create a directory with permissions For system locations such as /usr/local/bin, you may need appropriate privileges. Always check the target path before copying files.

dpkg is the lower-level package tool used by Debian-based Linux systems. It works directly with .deb files and the installed package database. Install a local .deb file If dependencies are missing, fix them with: List installed packages Check whether a package is installed Find which package owns a file For normal package installation from repositories, … Read more