掌握 Linux 命令是编写有效的 shell 脚本必不可少的序曲。
本章节涉及了下列的命令：
.（参考source）acadduseragettyagrepararchatautoloadawk（参考 使用awk进行数学运算）badblocksbannerbasenamebatchbcbgbindbisonbuiltinbzgrepbzip2calcallercatcdchattrchfnchgrpchkconfigchmodchownchrootcksumclearclockcmpcolcolrmcolumncommcommandcompgencompletecompresscoproccpcpiocroncryptcsplitcucutdatedcdddebugfsdeclaredepmoddfdialogdiffdiff3diffstatdigdirnamedirsdisowndmesgdoexecdos2unixdudumpdumpe2fse2fsckechoegrepenableenscriptenveqnevalexecexit（相关话题：退出状态）expandexportexprfactorfalsefdformatfdiskfgfgrepfilefindfingerflexflockfmtfoldfreefsckftpfusergetfaclgetoptgetoptsgettextgettygnome-mountgrepgroffgroupmodgroups（相关话题：变量$GROUPS）gsgziphalthashhdparmheadhelphexdumphosthostidhostname（相关话题：变量$HOSTNAME）hwclockiconvid（相关话题：变量$UID）ifconfiginfoinfocmpinitinsmodinstallipipcalciptablesiwconfigjobsjoinjotkillkillalllastlastcommlastloglddlessletlexlidlnlocatelockfileloggerlognamelogoutlogrotatelooklosetuplplslsdevlsmodlsoflspcilsusbltracelynxlzcatlzmam4mailmailstatsmailtomakeMAKEDEVmanmapfilemcookiemd5summergemesgmimencodemkbootdiskmkdirmkdosfsmke2fsmkfifomkisofsmknodmkswapmktempmmencodemodinfomodprobemoremountmsgfmtmvncnetconfignetstatnewgrpnicenlnmnmapnohupnslookupobjdumpodopensslpasswdpastepatch（相关话题：diff）pathchkpaxpgreppidofpingpkillpopdprprintenvprintfprocinfopspstreeptxpushdpwd（相关话题：变量$PWD）quotarcprdevrdistreadreadelfreadlinkreadonlyrebootrecodereniceresetresizerestorerevrloginrmrmdirrmmodrouterpmrpm2cpiorshrsyncrunlevelrun-partsrxrzsarscpscriptsdiffsedseqservicesetsetfaclsetquotasetserialsettermsha1sumsharshoptshredshutdownsizeskillsleepslocatesnicesortsourcesoxsplitsqsshstatstracestringsstripsttysusudosumsuspendswapoffswaponsxsyncsztactailtartbltcpdumpteetelinittelnetTextexexectimetimestmpwatchtoptouchtputtrtraceroutetruetsettsortttytune2fstypetypesetulimitumaskumountunameunarcunarjuncompressunexpanduniqunitsunlzmaunrarunsetunsqunzipuptimeusbmodulesuseradduserdelusermodusersusleepuucpuudecodeuuencodeuuxvacationvdirvmstatvrfywwaitwallwatchwcwgetwhatiswhereiswhichwhowhoamiwhoiswritexargsxrandrxzyaccyeszcatzdiffzdumpzegrepzfgrepzgrepzip