| pwd |
print working directory |
pwd |
|
| ls |
list contents of directory |
ls |
-l (long info) |
| mkdir |
make directory |
mkdir pen |
|
| cd |
change directory |
cd ~/pen |
~ (home dir), - (previous dir) |
| ssh |
log into a remote server |
ssh @.com |
-Y (allows graphical windows) |
| mv |
move something to a new location (& rename if needed) |
mv pen pineapple |
|
| rmdir |
remove a directory |
rmdir pineapple |
|
| wget |
download something from an URL |
wget www.pineapple.com/pen.txt |
-i (use input file) |
| cat |
print contents of a file to screen |
cat pen.txt |
|
| gzip |
a tool for dealing with gzip files |
gzip pen.txt |
-l (show info) |
| zcat |
print contents of a gzipped file to screen |
zcat pen.txt.gz |
|
| whatis |
get a short description of a program |
whatis zcat |
|
| man |
print the man(ual) page of a command |
man zcat |
|
| head |
print first X number of lines of a file to screen |
head -n 20 pineapple.txt |
-n (number of lines to show) |
| | |
pipe, a way to pass output of one command to another |
cat pineapple.txt | head |
|
| tail |
print last X number of lines of a file to screen |
tail -n 20 pineapple.txt |
-n (number of lines to show) |
| less |
print file to screen, but allow scrolling |
less pineapple.txt |
|
| wc |
tool to count words, lines or bytes of a files |
wc -l pineapple.txt |
-l (number of lines not words) |
| grep |
print to screen lines in a file matching a pattern |
grep pineapple.txt | grep pen |
|
| ln |
make a (sym)link between a file and a new location |
ln -s pineapple.txt pineapple_pen.txt |
-s (make symbolic link) |
| nano |
user-friendly terminal-based text editor |
nano pineapple_pen.txt |
|
| rm |
more general 'remove' command, including files |
rm pineapple_pen.txt |
-r (to remove directories) |
| $VAR |
Dollar sign + text indicates the name of a variable |
$PPAP=pen |
|
| echo |
prints string to screen |
echo $PPAP |
|
| for |
begins 'for' loop, requires 'in', 'do' and 'done' |
for pineapple apple; do echo "$PPAP" pineapple apple $PPAP |
|
