Sed & Awk每日一例之一
1、sed [options] {sed-commands} {input-file}
sed -n 'p' /etc/passwd
2、sed [options] -f {sed-commands-in-a-file} {input-file}
$ vi test-script.sed
/^root/ p
/^nobody/ p
$ sed -n -f test-script.sed /etc/passwd
3、sed [options] -e {sed-command-1} -e {sed-command-2} {input-file}
sed -n -e '/^root/ p' -e '/^nobody/ p' /etc/passwd
sed -n \
-e '/^root/ p' \
-e '/^nobody/ p' \
/etc/passwd
4、sed [options] '{
sed-command-1
sed-command-2 }' input-file
sed -n '{
/^root/ p
/^nobody/ p
}' /etc/passwd
