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cat
display file contents
cd
change directory
chattr
change attributes on files and directories (ext2/ext3)
cp
copy files/directories
diff
compare files/directories for differences
file
display file type
find
search for files using criteria
getfacl
display ACL settings for files/directories
grep/egrep/fgrep
matches text within files
head/tail
display beginning/end of files
ln
link file/directories
locate
find files by name
ls / ll
list files/directories
lsattr
list file/directory attributes
mkdir
create a directory
more / less
displays text file one screen at a time
mv
move or rename files/directories
nano
a text editor
nautilus
GUI file manager
pwd
display full path of current working directory
rcp
copy files from one system to another
rm
remove files/directories
rmdir
remove a empty directory
setfacl
sets ACL attributes on files/directories
sort
sorts text files or given output
stat
displays filesystem statistical output
strings
extracts and displays legible info out of a non-text file
touch
creates an empty file. updates time stamp on existing file
vi
a text editor
view
display a text file
vim
an enhanced version of vi
wc
displays number of lines, characters, words, and bytes
whereis
display full pathname to a program or command and its man pages
which
display full pathname to a program or command
alias / unalias
sets and unsets shortcuts
awk
a programming language
cut
extract selected columns
echo
displays variable and echo arguments
env
displays or modifies environment variables
exit
terminates process or shell scripts
export
makes a variable a global variable
history
displays previously executed commands
pr
prints file on the display terminal
read
prompts for user input
sed
stream editor for filtering and transforming text
set
displays set variables
tee
sends output to two locations
tr
translates characters
kill
sends a signal to one or more processes
killall
kills all active processes
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