Linux Learning Note One

determine if it is a built-in directive

type [-TPA] name

If the instruction string is too long, how can I use two lines to output it?

cp/var/spool/mail/root/etc/crontab \
>/etc/fstab/root

if the volume is a widening of the content, you can use the "$ variable name" or the ${volume} to accumulate the content, as follows:

path= "$PATH":/home/bin

want to get the core version of the settings

version=$ (uname-r)

Observe all hair volume (ton of ambient hair does not have custom hair volume) :

Set

PS1: (Prompt character setting):

ps1= ' [\[email protected]\h \w \a #\#]\$ '

Linux Learning Note One