Command line prompts (mac os terminal) – *working project ———————————————————————————————————————–

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A is for alias

• alias  ~ Create an alias   ( I am, you are, we are an alias)
• alloc  ~ List used and free memory  (alloc -ate – id)
• apropos  ~ Search the whatis database for strings
• asr ~ Apple Software Restore
• awk  ~Find and Replace text within file(s)

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B is for bash

• basename ~ Convert a full pathname to just a filename
• bash ~ Bourne-Again SHell  (the ghost in the shell is $bash)
• bg  ~ Send to background  (begone! baby giant)
• bind~ Display readline key and function bindings
• bless Set volume bootability and startup disk options
• break Exit from a For, While, Until or Select loop
• builtin~ Execute a shell builtin
• bzip2 Compress or decompress files

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C is for curl…

• cal ~ Display a calendar
• calendar ~ Reminder Service
• caller  ~ Return the context of a subroutine call
• case  ~ Conditionally perform a command
• cat  ~ Concatenate and print (display) the content of files
• cd  ~ Change Directory
• chflags ~ Change a file or folder’s flags
• chgrp ~ Change group ownership
• chmod ~ Change access permissions
• chown ~ Change file owner and group
• chroot  ~ Run a command with a different root directory
• cksum  ~ Print CRC checksum and byte counts
• clear ~ Clear terminal screen
• cmp ~ Compare two files
• comm ~Compare two sorted files line by line
• command ~  Run a command (not a function)
• complete ~ Edit a command completion [word/pattern/list]
• continue ~ Resume the next iteration of a loop
• cp ~ Copy one or more files to another location
• cron ~ Daemon to execute scheduled commands
• crontab ~ Schedule a command to run at a later date/time
• csplit ~ Split a file into context-determined pieces
• curl  ~ Transfer data from or to a server
• cut ~ Divide a file into several parts

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D is for ds directory service

• date ~ Display or change the date & time
• dc ~ Desk Calculator
• dd ~ Convert and copy a file, clone disks
• declare ~  Declare variable & set attributes
• defaults ~  Set preferences, show hidden files
• df  ~ Display free disk space
• diff  ~ Display the differences between two files
• diff3 ~  Show differences among three files
• dig  ~ DNS lookup
• dirname  ~ Convert a full pathname to just a path
• dirs  ~ Display list of remembered directories •
• diskutil  ~ Disk utilities – Format, Verify, Repair
• disown  ~ Unbind a job from the current login session •
• ditto  ~ Copy files and folders
• dot_clean ~  Remove dot-underscore files
• drutil I ~ nteract with CD/DVD burners
• dscacheutil Query or flush the Directory Service/DNS cache
• dseditgroup  ~ Edit, create, manipulate, or delete groups
• dsenableroot  ~ Enable root access
• dsmemberutil  ~ View user and groups rights
• dscl  ~ Directory Service command line utility
• du  ~ Estimate file space usage

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e is for exit ..

• eval ~ Evaluate several commands/arguments
• exec ~ Execute a command
• exit ~ Exit the shell
• expand ~ Convert tabs to spaces
• expect ~ Programmed dialogue with interactive programs
• export~ Set an environment variable •
• expr ~ Evaluate expressions

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W is for Wildcards ..

theses are wonderful so here we go

• * (Asterisk) Wildcard ~ ls  *.gif – lists all the gifs !
• ? (Question Mark) Wildcard ~ $ ls *.??? –it was something with three characters I can’t remember
• [] (Square Brackets) Wildcard ~ range of things  arrays ! [88- 96]