Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

stopping

Apache,  473 – 474

NFS,     450

Nginx,   500 – 501

Samba,   457 – 458

storing shell scripts, 257

strings

backtick    (`) in,  267

comparing

in  pdksh   and bash,    268 – 269

in  tcsh,    273

in  double  quotes  (“),     265 – 266

manipulating    with    sed and awk,     205 – 207

searching,   170 – 171

in  single  quotes  (‘),     266 – 267

su command, 219 , 234 – 236 , 241

subnet masks, 360

subnetting, 359 – 360

subqueries (SQL), 522

Subversion, 658 – 659

sudo command, 14 – 15 , 128 – 129 , 218 – 219 , 236 – 239 , 241

creating    users,   154 – 155

fixing  errors,  152 – 154

removing    users,   155

warnings    about,   151 – 152

suid (set user ID) permissions, 144 – 145

super user accounts

creating    users,   154 – 155

explained,   128 – 129 ,     218 – 219