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no external commands, but can only do 0-99, not 1-100, so we adjust it later
Did some research and found the previous command wrong, we don't kill a zombie but its parent. Just made some modifcation to khashmeshab's command.
head by default displays first ten lines of its output. Use 'head -nXX' to display the XX largest files
There is no need to 'zcat textfile.gz | less' with newer distros. This is useful for reading archived log files without having to extract, read, and zip when done.
show directory three
don't `man bash`
This is useful for command line 'recycle bins' and such like
This command generates a sequential login list. Good to be used as a source of new logins.
for passwordless login
Using the "#" in shell is surprisingly useful.
Some of the uses I found:
a) As a visible copy buffer in shell history (caveat: do not use for passwords :-)
b) To build complex commands until ready then hit the HOME, DEL, ENTER keys to run it
c) Placing reference data into shell history (search for tags with CTRL-R TAGNAME)
d) Putting aside a "work in progress" command to focus on another task (HOME # ENTER)
Useful for removes a package and its depends, for example to remove the gnome desktop environment, also configuration files will be removed, you should be carefully and sure that you want to do this.
which <command> > /dev/null 2>&1 || echo Error!
For example, I write
which colordiff > /dev/null 2>&1 && alias diff=colordiff
in my `~/.bashrc`.
-p -> loop (same as -n in sed)
-i -> edit files
-e -> execute command
replace Old with New in all *.html files
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