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rm (short for remove) is a basic command on Unix and Unix-like operating systems used to remove objects such as computer files, directories and symbolic links from file systems and also special files such as device nodes, pipes and sockets, similar to the del command in MS-DOS, OS/2, and Microsoft Windows.
srm (or Secure Remove) is a command line utility for Unix-like computer systems for secure file deletion. srm removes each specified file by overwriting, renaming, and truncating it before unlinking. This prevents other people from undeleting or recovering any information about the file from the command line.
File deletion is the removal of a file from a computer's file system. All operating systems include commands for deleting files (rm on Unix and Linux, [1] era in CP/M and DR-DOS, del/erase in MS-DOS/PC DOS, DR-DOS, Microsoft Windows etc.). File managers also provide a convenient way of deleting files. Files may be deleted one-by-one, or a whole ...
update is used to resynchronize the package index files from their sources. The lists of available packages are fetched from the location(s) specified in /etc/apt/sources.list. For example, when using a Debian archive, this command retrieves and scans the Packages.gz files, so that information about new and updated packages is available.
A typical input of the Debian build tools: three files constituting the source package (the bottom) and the unpacked source tree with a debian subdirectory added there by the package maintainer. The Debian build toolchain is a collection of software utilities used to create Debian source packages ( .dsc ) and Debian binary packages ( .deb files ...
dpkg-genchanges reads the information from an unpacked Debian tree source that once constructed creates a control file (.changes). dpkg-buildpackage is a control script that can be used to construct the package automatically. dpkg-distaddfile adds a file input to debian/files.
It is analogous to the Unix rm command and to the Stratus OpenVOS delete_file and delete_dircommands. [5] DEC RT-11, [6] OS/8, [7] RSX-11, [8] and OpenVMS [9] also provide the delete command which can be contracted to del. AmigaDOS [10] and TSC FLEX [11] provide a delete command as well. The erase command is supported by Tim Paterson's SCP 86 ...
When a file system creates a file, it allocates space for data. Some file systems permit or require specifying an initial space allocation and subsequent incremental allocations as the file grows. To delete a file, the file system records that the file's space is free; available to use for another file.