Bash Cmds Flashcards
Cd
Change directory
.. or .
Parent directory
Current directory
~
Home directory
Vi
Text editor
Ls
List
Ls user
Lists directories
Pwd
Print working directory
Ls-s
Reference to a file
Chmod
Give permissions
Less[file]
Show one page at a time
Touch file
Create a file
Ls -l file
Gives info about file
Echo
Display a line of txt/str on stdr or file
Rm
Remove
Type
Determine if cmd built in, an alias, or executable
Cat[file 1,file 2]
Copy files to stdout as listed
Date
Displays date and time
Wc[file]
Word count (#lines, words, chars)
Clear
Clears screen
help[cmd]
Display description of shell cmd
< > »_space; >& <>
- stdin
- stdout
- append
- stdout/stderr
- stdout/stdin
*
All
?
any 1 character
[abc]
Any char in set
[!abc]
Any char not in set
$
Variables
Cp
Copy
History
500 lines of history
History n
Most recent n cmds
History -c
Delete history
!!
Repeat last cmd
!n
Repeat cmd n
! -n
Repeat cmd n cmds ago
!foo
Repeat cmd started with foo
Env
Display environment variables
“=“
Set bar
$PATH
Displays list directory
Export
Export shell variables
- e
- fi
- d
- w
- o
- switch that determines if file at a particular path
- end of an if block
- True if file is reg file
- true if file exists and is writable
- true if your the user
Make vars ints
Have to use casting
(y=y+1)
Or / and
&& ||
-lt
Less than
mkdir
Make directory (creates a new folder) Ex) mkdir ~/Desktop/seng265
mv
Moves file from one place to another
ex) mv
Vim [filename]
Opens file in txt editor (creates new file if non specified
Command mode: issue cmds
Insert mode: type text
Set
Displays environment and shell variables
