When expanding, bash output the command, so don't be affraid if you type the command.
Here is the details:
First examples:
echo foo bar foobar barfoo
First argument:
echo !$
echo barfoo
barfoo
(Note that typing echo foo bar foobar barfoo && echo !$, bash substitute !$ with $:1)
Last argument:
echo foo bar foobar barfoo && echo !^
echo foo bar foobar barfoo && echo barfoo
foo bar foobar barfoo
barfoo
All the arguments:
echo !*
echo foo bar foobar barfoo
foo bar foobar barfoo
The third argument:
echo foo bar foobar barfoo && echo !:3
echo foo bar foobar barfoo && echo foobar
foo bar foobar barfoo
foobar
You may want to add {} for large numbers: echo !:{11} for example
Now with path:
echo /usr/bin/foobar
/usr/bin/foobar
For the head:
echo !$:h
echo /usr/bin
/usr/bin
And the tail:
echo !$:t
echo foobar
foobar
You also may want to try !:h and !:t or !!3-4 for the third and the fourth (so !!:* == !!:1-$)
tar options may change ;) c to compress into a tar file, z for gzip (j for bzip) man tar -print0 and -0t are usefull for names with spaces, \, etc.
seq allows you to format the output thanks to the -f option. This is very useful if you want to rename your files to the same format in order to be able to easily sort for example:
for i in `seq 1 3 10`; do touch foo$i ;done
And
ls foo* | sort -n
foo1
foo10
foo4
foo7
But:
for i in `seq -f %02g 1 3 10`; do touch foo$i ;done
So
ls foo* | sort -n
foo01
foo04
foo07
foo10
Show Sample Output
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