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Linux-Environment
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This section collects info about common Linux shell environment variables. As a first step it is crowded by the variables found scanning the busybox executable of each Firmware for all possible variables found in the busybox source code. A lot more variables will appear here once uClibc libraries are scanned. Some variables also appear in AVM-Environment and in CGI-Environment, which are in fact all the same, but at different positions and with different inheritance so they get own articles, and are cross referenced in the name collision header of each affected article. See also GNU Bash-Variables.
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Linux-Environment[edit]
Daily updated index of all Linux shell variables found during firmware scans. Last update: 2019-12-13 23:41 GMT.
The label (linenv) in the Variable column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective variable. If empty this is an orphan from older firmware.
| Variable | Mod | Description | Type | Origin |
|---|---|---|---|---|
| ACTION | 2 | The action to perform for mdev. | Text | busybox |
| BASH_XTRACEFD | 2 | File descriptor number for trace output. | Text | busybox |
| CDPATH | 120 | The search path for the cd command. | Text | busybox |
| COLUMNS | 118 | The number of characters per line on the console window. | Text | busybox |
| CONSOLE | 120 | The console tty used by this Shell. | Text | busybox |
| DEVPATH | 2 | The sysfs device path for mdev. | Text | busybox |
| ENV | 120 | Path to a profile script for ash. | Text | busybox |
| EXINIT | 90 | Variable to customize vi. | Text | busybox |
| FILENAME | 64 | TODO | Text | busybox |
| FIRMWARE | 2 | The firmware to load for mdev. | Text | busybox |
| GETOPT_COMPATIBLE | 66 | Compatiblity tweak for getopt. | Text | busybox |
| GID | 64 | The group id of the user who owns this Shell. | Text | busybox |
| HOME (linenv) | 120 | The home directory of this Shell. | Text | busybox |
| HOSTNAME | 35 | The hostname of this machine. | Text | busybox |
| IFS | 120 | The character used as the internal field separator. | Text | busybox |
| LANG | 11 | The language of this Shell to select the Locale. | Text | busybox |
| LC_ALL | 11 | Forced Locale of this Shell for applications. | Text | busybox |
| LC_CTYPE | 11 | The character set used to display and input text. | Text | busybox |
| LINES | 90 | The number of text lines on the console window. | Text | busybox |
| LOGNAME | 118 | Similar to USER, some programs prefer to read this variable. | Text | busybox |
| OLDPWD (linenv) | 120 | The previous working directory of this Shell. | Text | busybox |
| OPTERR | 2 | 1= Display error messages generated by builtin getopts. | Text | busybox |
| PATH (linenv) | 104 | The path to search for commands of this Shell. | Text | busybox |
| POSIXLY_CORRECT | 82 | If present: Try to behave according to the POSIX standard. | Text | busybox |
| PWD (linenv) | 106 | The current working directory of this Shell. | Text | busybox |
| RUNLEVEL | 90 | The current system runlevel. | Text | busybox |
| SEQNUM | 2 | The sequence number for mdev. | Text | busybox |
| SHELL (linenv) | 118 | The absolute path of this Shell. | Text | busybox |
| SHLVL (linenv) | 40 | The number of shell levels running above this Shell. | Text | busybox |
| SUBSYSTEM | 2 | The sybsystem to use for mdev. | Text | busybox |
| TERM (linenv) | 120 | The terminal emulation used by this Shell. | Text | busybox |
| TIME | 2 | TODO | Text | busybox |
| TZ (linenv) | 9 | The time zone used by this Shell. | Text | busybox |
| UID | 64 | The unique id of the user who owns this Shell. | Text | busybox |
| USER (linenv) | 118 | The user who owns this Shell. | Text | busybox |
| 35 Linux variables | ||||
