Kemiko: Created page with "Favorite Commands (Debian/Ubuntu): Some Notation:
" #": everything following this to the end of the line is a comment...you can also paste it...the she..."

2017-06-11T19:52:38Z

Created page with "Favorite Commands (Debian/Ubuntu): Some Notation: " #": everything following this to the end of the line is a comment...you can also paste it...the she..."

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Favorite Commands (Debian/Ubuntu):

Some Notation:
 
" #": everything following this to the end of the line is a comment...you can also paste it...the shell will ignore it
 
FILE: filename
 
DIR: directory
 
PATH: directory/[file] location
 
LINE: line's contents
 
CMD: command like awk, cat, echo, grep, etc.
 
LIT: literal/static variable no REGEX
 
REGEX: "REGular EXpression"...a pattern matching expression
 
DATE: date...format may vary
 
TIME: time...format may vary
 
NUM: numeric value
 
SEP: field separator
 
VAR: variable
 
URL: Uniform Resource Locator
 
/dev/null: a device file representing nothing
 
read: shell builtin that read's stdin
 
*: wildcard
 

<ul>
<li>
type CMD    # cool builtin that tells you what you are looking at...
</li>
<ul>
<li>
alias
</li>
<li>
builtin
</li>
<li>
command
</li>
<li>
etc.
</li>
</ul>
</li>
<li>
uname -a    # lists basic system information
</li>
<li>
uptime    # print time since system boot
</li>
<li>
top    # traditional performance monitor
</li>
<li>
htop    # improved performance monitor
</li>
<li>
mytop    # a top like tool for MySQL
</li>
<li>
itop    # a top like tool I programmed for Informix 9.40.FC7
</li>
<li>
du -hd1 | sort -h    # disk usage (human size), one level deep and sum by directory...pipe to sort smallest to largest
</li>
<li>
find . -type f -exec grep -in "LIT/REGEX" {} /dev/null \;    # case insensitive search regular files for "LIT/REGEX" inside file...printing "path/filename:line:content"
</li>
<li>
find . -type f -exec ls -hlatr {} \; | sort -hk5,5    # long list all files under a directory, sort smallest to largest (human size)
</li>
<li>
find . -maxdepth 1 -type f    # list only regular files in current directory
</li>
<li>
rm -rf PATH    # remove a "PATH" and all content
</li>
<li>
awk -F'SEP' '{print $NUM}'    # print the column "NUM" delimited by "SEP"
</li>
<li>
locate LIT    # print the PATH of file name matching "*LIT*"
</li>
<li>
less -S FILE    # page "FILE" with no line wrap
</li>
<li>
wget URL    # get "URL" from http/ftp
</li>
<li>
scp PATH1 username@hostname:PATH2    # put "PATH1" to "PATH2"
</li>
<li>
scp -r PATH1 username@hostname:PATH2    # same as above, but recursively puts directory and all files under it
</li>
<li>
scp username@hostname:PATH1 PATH2    # get "PATH1" to "PATH2"
</li>
<li>
scp -r username@hostname:PATH1 PATH2    # same as above, but recursively gets directory and all files under it
</li>
<li>
cat FILE    # display contents of "FILE"
</li>
<li>
vi FILE    # edit/view "FILE"
</li>
<li>
echo $VAR    # display contents of variable "VAR"
</li>
<li>
>FILE    # zeros out "FILE" keeping current attributes
</li>
<li>
cp /dev/null FILE    # zeros out "FILE" keeping current attributes
</li>
<li>
touch FILE    # creates a FILE of zero size if does not exist or updates file's timestamp to current time
</li>
<li>
\CMD    # unalias "CMD"
</li>
<li>
"CMD"    # unalias "CMD"
</li>
<li>
while [ 1 ]; do CMD; sleep NUM; done    # repeat CMD with NUM seconds between/wait
</li>
<li>
cat FILE | while read LINE; do CMD; done    # read a file line by line doing a CMD until file's end
</li>
<li>
apt-get update    # updates the system's package lists
</li>
<li>
a2ensite kohlmeyer.us.conf    # Apache...enable a virtual host
</li>
<li>
ffmpeg -ss 4.5 -i input.mp3 -t 1.7 output.mp3    # cut a mp3 from 4.5 seconds to 6.2 seconds
</li>
<li>
vlc FILE    # play audio or video FILE
</li>
<li>
eog FILE    # display image FILE
</li>
<li>
gnome-system-monitor    # graphical display of system resources
</li>
<li>
gimp    # run GNU Image Manipulation Program
</li>

Linux Commands - Revision history

Kemiko: Created page with "Favorite Commands (Debian/Ubuntu): Some Notation: " #": everything following this to the end of the line is a comment...you can also paste it...the she..."

Kemiko: Created page with "Favorite Commands (Debian/Ubuntu): Some Notation:
" #": everything following this to the end of the line is a comment...you can also paste it...the she..."