Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

shells,  252 – 253

pbget command, 664

pbm command, 79

pbput command, 664

pbputs command, 664

pbuilder, configuring, 670

PCX file format, 78

PDF Editor, 66

PDF readers/editors, 66

pdksh shell, 250 . See also shells

case    statements,  284 – 285

comparison  of  expressions,     267 – 272

file    comparisons,     271 – 272

logical operators,   272

number  comparisons,     269 – 271

string  comparisons,     268 – 269

for statements,  277

functions,   286 – 287

if  statements,  282 – 283

select  statements,  281 – 282

until   statements,  280 – 281

while   statements,  279

PDP-11 minicomputer, 682

performance tuning

Apache,  421 – 422

file    system,  415 – 416 ,     418

badblocks   command,     420

BIOS    settings,    416 – 417

disabling   file    access  time,    420