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mv !(fileOne) ~/path/newFolder

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:se nonu

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Shift + V for visual line to select the lines in visual mode


If all that is wanted is to display the name of the current file, type Ctrl-G (or press 1 then Ctrl-G for the full path).

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To format a line to the left I use :left. Use this format an entire file:

:%le

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count the number of phone number

grep -E "[0-9]{3}-[0-9]{7}" ./test/* | wc -l

show the filename which contain the phone number

grep -lE "[0-9]{3}-[0-9]{7}" ./test/*
-E activates regular expressions (you could use egrep instead)

-l filters grep results, only the file name will be printed

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export PS1="\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h:\[\033[33;1m\]\w\[\033[m\]\$ "
export CLICOLOR=1
export LSCOLORS=ExFxBxDxCxegedabagacad
alias ls='ls -GFh'

The first line changes the bash prompt to be colorized, and rearranges the prompt to be “username@hostname:cwd $”

The next two lines enable command line colors, and define colors for the ‘ls’ command

Finally, we alias ls to include a few flags by default. -G colorizes output, -h makes sizes human readable, and -F throws a / after a directory, * after an executable, and a @ after a symlink, making it easier to quickly identify things in directory listings.

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show ith of a: a & 1 << i

reset ith of a: a &= ~(1 << i)

populate the result: result |= 1 << i

(-i) & i; //NOTE from right to left, get first '1' and other bits is '0'

n & (n - 1) == 0 check if n is power of 2

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1. git log -1 --stat

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1. Type gg to move the cursor to the first line of the file, if it is not already there.
2. Type dG to delete all the lines.

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Up     Ctrl+P
Down   Ctrl+N
Left   Ctrl+B
Right  Ctrl+F
Home   Ctrl+A
End    Ctrl+E
Delete Ctrl+D

Search Ctrl+R