Linux Bash scripting-command Chaining & Command lists

# this are to show what you are to execute a series of commands in one strike.

$ clear; CD/; Ls-l; echo "You is in $PWD"; echo "Time to go home"; CD ~;

# Use semi colon between command.

# There is also command lists, which are for a different logic

# # Double ampersand means anding, double pipe means ORING; When using && if only when the first command exits 0 (successful), the later command would be proceeded; When using | |, if the first command exits none of zero (not successful), the later command would be proceeded;

$ ls-l && You is in $PWD, were in $OLDPWD

$ ls-z | | You is in $PWD

Linux Bash scripting-command Chaining & Command lists