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Add description for whatis command (#31) 

* Add whatis command

* Edit mistype
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JaeYoung Mun 2017-04-07 18:29:38 +09:00 committed by Adnan Ahmed
parent 2cfa591650
commit e0731233e0
1 changed files with 14 additions and 3 deletions
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@ -38,7 +38,18 @@ $ echo $AWS_HOME
/Users/adnanadnan/.aws /Users/adnanadnan/.aws
``` ```
### b. `whereis` ### b. `whatis`
whatis shows description for user commands, system calls, library functions, and others in manual pages
```bash
whatis something
```
Example:
```bash
$ whatis bash
bash (1) - GNU Bourne-Again SHell
```
### c. `whereis`
whereis searches for executables, source files, and manual pages using a database built by system automatically. whereis searches for executables, source files, and manual pages using a database built by system automatically.
```bash ```bash
whereis name whereis name
@ -49,7 +60,7 @@ $ whereis php
/usr/bin/php /usr/bin/php
``` ```
### c. `which` ### d. `which`
which searches for executables in the directories specified by the environment variable PATH. This command will print the full path of the executable(s). which searches for executables in the directories specified by the environment variable PATH. This command will print the full path of the executable(s).
```bash ```bash
which program_name which program_name
@ -60,7 +71,7 @@ $ which php
/c/xampp/php/php /c/xampp/php/php
``` ```
### d. clear ### e. clear
Clears content on window. Clears content on window.
## 1.1. File Operations ## 1.1. File Operations