| -a |
display all variables
|
| -b |
print value without new line
|
| -e |
ignore unknown variables errors
|
| -N |
print variable names without values
|
| -n |
print only values of the given variable(s)
|
| -p FILE |
read values from file
|
| --system |
read values from all system directories
|
| -r PATTERN |
select setting that match expression
|
| -q |
do not echo variable set
|
| -w |
enable writing a value to variable
|
| -h |
display help and exit
|
| -V |
output version information and exit
|