Difference between revisions of "Basic Commands"
| Line 29: | Line 29: | ||
= ls = | = ls = | ||
List files and folders.</br> | |||
<code>-a</code> do not ignore entries starting with .</br> | <code>-a</code> do not ignore entries starting with .</br> | ||
<code>-F</code> append a symbol to indicate type (* executable, / directory, @ symlink, = socket, | named pipe, > door)</br> | <code>-F</code> append a symbol to indicate type (* executable, / directory, @ symlink, = socket, | named pipe, > door)</br> | ||
| Line 58: | Line 59: | ||
<code>-R</code> apply recursive</br> | <code>-R</code> apply recursive</br> | ||
<code>-x</code> remove access acl</br> | <code>-x</code> remove access acl</br> | ||
= sort = | |||
Used to sort output.</br> | |||
<code>-u</code> only display unique names</br> | |||
<code>-n</code> numeric sort</br> | |||
<code>-r</code> reverse order</br> | |||
= w = | = w = | ||
Latest revision as of 11:59, 22 September 2023
cp
-a, --archive Combines the d, p and r options
-b, --backup before removal, make a backup
-d, --no-deference preserve links
-f, --force remove existing destinations without prompting
-i, --interactive show prompt before overwriting
-l, --link link files instead
-p, --preserve preserve file attributes
-r, --recursive recursively copy directories
column
Arrange output in columns
-t create table
hostname
Shows the current hostname.
-f show FQDN
hostnamectl status (default) show current system hostname and related information.
hostnamectl set-hostname set and apply a new hostname
last
Show a list of last logged in users and system boots.
Can be refined with a username/keyword.
lastb
Show a list of last failed login attempts.
Can be refined with a username/keyword.
ls
List files and folders.
-a do not ignore entries starting with .
-F append a symbol to indicate type (* executable, / directory, @ symlink, = socket, | named pipe, > door)
-h (with -l and -s) print sizes like 1K 234M 5G
-i display inode number
-l use a long listing format
-r reverse order while sorting
-s display size
-t sort by time, newest first
less & more
space / f scroll forward one screen
enter scroll forward one line
b scroll backward one screen
d scroll forward half a screen
h display help
q quit
/string search string forward
?string search string backward
n find next occurrence
N find previous occurrence (less only)
setfacl
-b remove all access acls
-d apply default acl
-k remove all default acls
-m set or modify acls
-n prevent automatic recalculation of mask
-R apply recursive
-x remove access acl
sort
Used to sort output.
-u only display unique names
-n numeric sort
-r reverse order
w
Display current system information.
watch
Execute a command every X seconds (default 2).
watch -n X who execute the who command every X seconds
wc
Display lines (-l), words (-w), bytes (-c) or characters (-m) of file.
whatis
Display one-line man page description of a command.
whereis
Locate the binary, source and man pages for a command.
which
Locate a command.
who
Display currently logged in users.