language
- access
- test whether a file exists
- back
- return to the previous directory
- beep
- beep the terminal
- break
- break out of a loop
- bye
- terminate task execution
- cache
- cache the parameters for a task in fast memory
- chdir
- cl
- clear
- clear the terminal screen
- commands
- the CL command syntax
- decls
- defpac
- dparam
- dump the parameters of a pset as a series of assignments
- edit
- edit a text file
- ehistory
- edit and re-execute previous commands
- envget
- get the string value of an environment variable
- eparam
- edit a task's parameters
- error
- abort a task
- flprcache
- flush the process cache
- for
- FOR statement
- fprint
- gflush
- flush any buffered graphics output
- goto
- branch to a label
- hidetask
- hide a task from the user
- history
- display the last few commands
- if
- -- conditional execution of a statement
- intro
- a brief introduction to the CL
- jobs
- display the status of background jobs
- keep
- keep memory after task termination
- kill
- kill a background job
- logging
- logout
- log out of the CL
- lparam
- list the parameters of a task or pset
- mathfcns
- math functions available in the CL
- mktemp
- make a unique file name
- next
- start the next iteration of a for or while loop
- osfn
- convert an IRAF filename to a host system filename
- package
- define a new package
- params
- prcache
- cache a subprocess
- proc
- putlog
- put a message to the logfile
- radix
- encode a number in any radix
- return
- exit a procedure
- scan
- service
- respond to a parameter request from a bkg job
- set
- show
- show the current value of an IRAF environment variable
- sleep
- suspend process execution for the specified interval
- strings
- string manipulation functions available in the CL
- stty
- set/show terminal characteristics
- switch
- switch case statement
- task
- time
- display the current time
- unlearn
- restore initial defaults for parameters
- update
- update the parameters for a task on disk
- wait
- wait for a background job to terminate
- while
- while loop construct