shell-scripting

global & regular expression

grep '^A.*.txt' *.txt .csv ls | grep '^[a-z]' ls file[a-z9]?txt ls file[!a-z].txt ls file[*abc].txt

ssssss

{1..10} *.txt $(( 2 + 2 )) $(whoami) $USER

wildcards

file.*

Name		Name	Last commit message	Last commit date
Latest commit History 14 Commits
1		1
README.md		README.md
connect_server.sh		connect_server.sh
hello2.sh		hello2.sh
linux-bash.pdf		linux-bash.pdf
pattern.sh		pattern.sh
ping_server.sh		ping_server.sh
script2.sh		script2.sh