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PDF import via software, or extensions. Apache PDFBox: Apache License 2.0: Yes Yes Unix Yes Converts PDF to other file format (text, images, html). Collabora Online: MPLv2.0: Yes Yes Yes Android, iOS, iPadOS, ChromeOS and Online Yes Yes Import from PDF, export as PDF including PDF/A. Foxit Software: Proprietary: Yes Yes Yes Android, iOS, iPadOS ...
In computing, redirection is a form of interprocess communication, and is a function common to most command-line interpreters, including the various Unix shells that can redirect standard streams to user-specified locations. The concept of redirection is quite old, dating back to the earliest operating systems (OS).
The CSRG incorporated the r-commands into their Unix operating system, the Berkeley Software Distribution (BSD). The r-commands premiered in BSD v4.1. [2] Among the programs in the suite are: rcp (remote copy), rexec (remote execution), rlogin (remote login), rsh (remote shell), rstat, ruptime, and rwho (remote who). [2] [3]
Xpdf includes several programs that don't need an X Window System, including some that extract images from PDF files or convert PDF to PostScript or text. These programs run on DOS, Windows, Linux and Unix. [4] Xpdf is also used as a back-end for other PDF readers frontends such as KPDF and GPDF, [6] and its engine, without the X11 display ...
For example, if the command rsync local-file user@remote-host:remote-file is run, rsync will use SSH to connect as user to remote-host. [14] Once connected, it will invoke the remote host's rsync and then the two programs will determine what parts of the local file need to be transferred so that the remote file matches the local one.
The name "shell" for a command-line interpreter and the concept of making the shell a user program outside of the operating system kernel were introduced in Unix's precursor Multics. An early feature of the Thompson shell was a compact syntax for input/output redirection. In Multics, redirecting the input or output of a command required ...
In the original Bell Labs Unix, a two-disk setup was customary, where the first disk contained startup programs, while the second contained users' files and programs. This second disk was mounted at the empty directory named usr on the first disk, causing the two disks to appear as one filesystem, with the second disk’s contents viewable at ...
A filter is a computer program or subroutine to process a stream, producing another stream. While a single filter can be used individually, they are frequently strung together to form a pipeline. Some operating systems such as Unix are rich with filter programs. Windows 7 and later are also rich with filters, as they include Windows PowerShell.