info (Unix)
| info
|
|
|---|---|
|
|
| info shows the info document about yourself. | |
| Basic data
|
|
| Publishing year | 1977 |
| Current version | 6.5.0 |
| operating system | GNU |
| programming language | C. |
| category | File viewer , browser |
| License | GNU General Public License |
| German speaking | Yes |
| https://www.gnu.org/software/texinfo/ | |
The Unix command info launches into the command-line interface (Engl. "Command line interface", or "CLI") working utility that a hypertext is, multipage document.
Info reads info files generated by the texinfo program and presents the documentation in a tree-like structure , in which you can move around with simple commands and follow cross-references.
history
The info implemented in the programming language C was conceived as the main documentation system of GNU-based operating systems and later ported to other Unix-like operating systems. However, info files have already been used under ITS Emacs .
service
Key assignment
For example, you can use the space bar to move down in the current node or, if you have already reached the lower edge of the current node, to the next node of the current document, whereby you can read the content of an info file sequentially. If you press the backspace key , you move in the opposite direction.
| button | function |
|---|---|
| ] | goes to the next node of the current document |
| [ | goes to the previous node in the current document |
| n | goes to the next node on the same level as the current node, because of engl. "Next" |
| p | goes to the previous node on the same level as the current node "Previous" |
| u | goes to the parent of the current node, because of engl. "Up" |
| l | goes to the last visited node, because of engl. "load" |
If you have moved the cursor to a reference (a word with an asterisk * in front of it) and press the enter key , info follows the reference.
Search the indices
The program can also be called in such a way that it searches the indices of the info documents for a word, similar to how the program apropos searches the manual pages. For this function, the option --aproposor -k(for "keyword") is used when calling it .
user@linux-system: ~ $ info --apropos boot
"(coreutils)who invocation" -- --boot
"(automake-1)Error required file ltmain" -- bootstrap.sh and autoreconf
"(grub)boot" -- boot
"(grub)multiboot" -- multiboot
"(grub)net_bootp" -- net_bootp
"(grub)reboot" -- reboot
user@linux-system: ~ $ info --index-search=boot "(coreutils)who invocation"
In the example, the following, simpler command would also lead to the same goal to specifically call up the desired information:
user@linux-system ~ $ info index-search boot who
Well-known info browser
| program | description | annotation |
|---|---|---|
| info | The standard viewer for the info documents | |
| pinfo | An info browser based on curses. | |
| tkinfo | Displays info documents under X-Windows, i.e. an info browser for graphical user interfaces of Linux. | |
| khelpcenter | Click on "Browse Info Pages". | |
| emacs | ||
| vinfo | A plug-in for the text editor vim, with which the info documents can be displayed. |
See also
Individual evidence
- ^ Alan Bawden: “ It was a new EMACS package. I would guess this was sometime in 1977 "
- ↑ Stacy, Christopher C .: Getting Started Computing at the AI Lab (= Artificial Intelligence Laboratory [Hrsg.]: AI Working Paper . No. 235 ). Massachusetts Institute of Technology, September 7, 1982 ( mit.edu [accessed May 11, 2018]).
- ↑ vinfo. March 3, 2015, accessed on May 10, 2018 (English): "Vim info documentation reader, allows to read info pages when inside a Vim session or from the shell prompt (instead of Info)."