n -name n find P P - - PDF document

SLIDE 1

• ✁✄✂✄☎✝✆

✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✙ ✚

n find

✛✢✜ ✣✥✤✧✦✩★✫✪✩✬✮✭✖✯✱✰✲✜☞✭✴✳✶✵✷✬

n

✸✺✹✼✻ ✽✴✾✢✿✺✻ ❀✴❁ ❂❃✽❄❀❅✽❇❆✶✻ ✾✢❈✺❁ ❉❋❊●✹❍✻❏■✺✻ ✹✴✾❋✽❇❀✒❀✴❁ ❉❋❊●✹✢❑ ❊❏❁ ❂▲✽✶❉▼✸❏❁ ✻ ✽❇✾❋◆❖✹❍✻P❁ ✽❇❀◗❆❘❉❙✸●❆❘❚ ❚✒◆✒❈❙✽❄❑✖❁ ❚ ✽❇❀◗❯ ❀✢✿✢❱❋✸❏❁ ✻ ✽✴✾❙◆❲✹✶✻P❁ ✽✴❀❳◆✒❈❋✽❇❨❩✾❋✹✶❉❋◆❲❆❬❁ ❉❋❭❪❱❅❆✴❀❅✽❫✸●✹❍❉ ✹❍■❋◆✖❁ ✹✶❉❋❀

n

✹❍■❋◆✖❁ ✹✶❉❋❀▼✾❙❆❘❉❴❱❋✽✱◆❖✽✴❀❅◆❲❀◗◆✒❈❋❆❇◆❍✸✺✽❇✾✺❁ ✸✢✽✱❵✱❈❋✽✴◆✖❈❋✽❘✻✷◆❖✹ ✾❋✹✶❉❋❀✴❁ ✸✢✽✶✻❛◆✒❈❋✽❜❑✖❁ ❚ ✽❇❭❘✹❍✻❛✾❅✹❍❝❜❝◗❆✶❉❅✸✺❀▼◆❖✹✼■❋✽❘✻ ❑❖✹✶✻P❝ ✹❍❉✧◆✒❈❋❆❇◆❍❑✥❁ ❚ ✽ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✙ ❞

n -name

❡P✜ ❢P✪❫✳✶✦❬★✫✪▲❣❍✦❤✰✝✰✐✪❇✣✝✳

n

✹✶❉✺❚ ❨❥❝❦❆✴◆❖✾✺❈✧❑✥❁ ❚ ✽❇❀◗❵✱❈❋✹✴❀❙✽❥❉❋❆❬❝◗✽❇❀❄❝❦❆✴◆❖✾✺❈ ❧✄♠ ♥❲♦✒♣✺q❫rs♦✖t✺q❘✉❲✉❖♦❅✈P♣

n -type

✰①✇✢✰✶② ③ f ④✶⑤ d ④❘⑤❴✬✱⑥

n

✹✶❉✺❚ ❨❥❝❦❆✴◆❖✾✺❈✧❑✥❁ ❚ ✽❇❀◗◆✖❈❋❆❇◆❍❆✶✻ ✽❥■✺❚ ❆❘❁ ❉✧❑✥❁ ❚ ✽❇❀▼⑦ f ⑧⑨✹❍✻ ✸❏❁ ✻ ✽❇✾❋◆❖✹❍✻P❁ ✽❇❀▼⑦ d ⑧⑨✹❍✻❶⑩

n -not

❷ -or ❷ \( ✬

\)

n

❆❘❚ ❚ ✹✴❵❸❱❋✹✴✹❍❚ ✽❫❆✶❉✧✾❙✹✶❝✱❱✢❁ ❉❋❆❇◆✒❁ ✹❍❉❋❀◗◆❲✹s❱❅✽❄❀✴■❋✽❇✾✺❁ ❑✝❁ ✽✴✸

n

⑦☛❆✶❉❙✸✼❁ ❀❄❁ ❝❄■✺❚ ❁ ✾✺❁ ◆❍✾❙✹✶❉✢❉❋✽✴✾❙◆❲✹✶✻ ⑧ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✙ ❹

n -print

n

■✺✻P❁ ❉❋◆❍✹❍✿❋◆❍◆✖❈❋✽❺■❙❆✴◆✖❈❻❉❅❆✶❝❳✽✱✹✢❑❘◆✒❈❋✽❄✾✴✿✺✻P✻ ✽❘❉❋◆❍❑✥❁ ❚ ✽

n

◆✒❈❋✽❄✸✢✽✴❑✄❆❬✿✺❚ ◆❍❆✴✾❙◆✒❁ ✹❍❉

n -exec

❼❫✭✴★✼★s✦❬✳❪✛❽✦❬✣✝❾❪✬

\;

n

✻P✿✺❉❽❿❋➀ r✱r❄q❇♣❍➁

n {}

❁ ❉▼❆❘✻ ❊✺❀❴✻ ✽❬■✺❚ ❆❇✾❅✽✴✸❴❵✱❁ ◆✒❈❴❝◗❆❇◆❲✾✢❈✺❁ ❉❙❊➂■❙❆❇◆✒❈ ❉❋❆✶❝❳✽

n -prune

n

✸✺✹❍❉❋➃ ◆❳✻ ✽❇✾✢✿✺✻ ❀✴❁ ❂➄✽✶❚ ❨❩❀✒✽✴❆❘✻ ✾✺❈✧◆✖❈✺❁ ❀◗✸❏❁ ✻ ✽❫✾❙◆❲✹❍✻ ❨ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✙ ✞

n diff

✭✴❢P✛✢➅✷✜ ❢P✪❻✳❪✪❬➆◗➅✷✜ ❢☞✪

n

➇✩✹❍❝❄■❅❆✶✻ ✽✱◆✒❈❋✽❜❆✶✻ ❊❏✿✴❝◗✽❘❉❋◆❍❑✖❁ ❚ ✽❇❀❴❚ ❁ ❉❙✽❇➈❙❱❋❨▲➈❙❚ ❁ ❉❋✽

n

➉✺✻P❁ ❉❋◆❍✹✶✿❋◆❍❵❜❈❋✽❘✻ ✽❄◆✒❈❅✽✴❨❩✸❍❁ ❑✄❑❖✽❘✻ n ➊❋➋❛➌❘➍❩➎ ➏ ➐☛➍❅➑◗➌❘➒❙➓❤➋❛➐❋➎ ➓→➔P➍❩➏ ➐❏➣P➏ ↔ ➑✝↕✴➣✐➏ ➎ ➍❦➙❖➛❋➍✴➎ ➍❙↕ ➍❙➛➄➜ n ➊❋➋❛➌❘➍❩➎ ➏ ➐☛➍❅➑◗➌❘➒❙➓❤➋❛➐❋➎ ➓→➔P➍❩➏ ➐❏➑✐➍❙➝✝➋✺➐☛➛❳➣✐➏ ➎ ➍➞➙❲➒❅➛➄➛❋➍❋➛❋➜ n ➊❋➋❛➌❘➍❩➎ ➏ ➐☛➍❅➑◗➌❘➒❙➓➟➔✐➍❦➛✢➏ ➣ ➣ ➍✴↔ ➍✺➐✐↕✢➙❲➝❃➠☛➒✴➐☛➡❋➍❋➛❙➜

n

➇⑨❚ ✽✴❂▲✽❘✻✷❆❬❚ ❊✺✹✶✻P❁ ◆✖❈✢❝➢❯➤❈❅✽✶✿✺✻P❁ ❀❅◆✒❁ ✾❙❀▼◆❖✹❴❑✥❁ ❉❋✸ ✾❙✹❍✻P✻ ✽❇❀✴■❋✹❍❉❋✸✢✽❘❉❙✾❋✽❥❱❋✽✴◆❖❵◗✽❫✽❘❉❴■❋❆❘✻ ◆❲❀▼◆✖❈❋❆❇◆❍❆✶✻ ✽❄◆✖❈❋✽ ❀❅❆❘❝◗✽❺❁ ❉●❱❙✹✴◆✒❈✧❑✖❁ ❚ ✽❇❀ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✟

n

➦✺✹❴❑✄❆❘✻ ❭❘✾❙✹❍❝✱❝❳❆✶❉❅✸✺❀❴❈❅❆✴❂▲✽❜❆✶■✴■❋✽✴❆❘✻ ✽❫✸●◆❲✹❴❆❘❚ ❵◗❆❇❨▲❀ ■✺✻P❁ ❉❋◆❍◆✖❈❋✽❘❁ ✻❶✻ ✽❇❀✢✿✢❚ ◆❖❀▼✹✶✿❋◆❍◆❲✹❴◆✖❈❙✽❄❀❅✾✢✻ ✽❇✽❘❉

n

➧❫✽✴❆❘❚ ❚ ❨▲❭❬✹❍✿❋◆✖■✢✿❋◆❍❊✢✹✢✽❇❀◗◆❖✹❻➨ ✉ q✴♣❍➁❙q❇✈❙➁ ➀✢➩ ✉ ➫ ➩ ✉ ⑦✥➨ ✉❲➁ ➀✴➩ ✉ ⑧☛❭❘❵✱❈✺❁ ✾✴❈➟✸✴✽✴❑✄❆❘✿✺❚ ◆❲❀▼◆❖✹❴◆✒❈❋✽✱❀❙✾✴✻ ✽❇✽✶❉ n ➭✩➠☛➍✢↔ ➍❙➯ ➑❍➒✴➎ ➑✐➋✧➲❃➳ ➵❅➸❋➺➄➵❅➻❖➺❜➼P➻✍➻✄➽❋➻✴➙✐➲➄➳ ➺✺➼P➻✍➻✲➜❖➾✴➣ ➋✺↔❃➒✴➐☛➓⑨➍✢↔✍↔ ➋✺↔ ➌❘➍❋➑☛➑✝➒❅➡❋➍❙➑☛➾❫➚❳➠➄➏ ➝❃➠❏➒✴➎ ➑✐➋❳➛❋➍❙➣ ➒✴➪➄➎ ↕✲➑❍↕✲➋❳↕☛➠✐➍❪➑✐➝▲↔ ➍❋➍✢➐

n

➶✐◆❲➃ ❀◗✽✴❆❇❀❅❨❜◆❖✹ ✈❙♦❫➁❋♠ ✈❙♦ ❿ ✉ ❀❅◆❲✸✺✹✶✿❋◆❲❭✩✽✶➹ ❊❏➹❫◆❖✹❴❆✱❑✖❁ ❚ ✽ n ➘❛➋❋➋❋➛❄➏ ➣❘➐☛➍❅➍❙➛◗↕ ➋◗↕ ➋❦➑☛➒❅➴✒➍❪➋❛➪☛↕☛➷❋➪☛↕✺➣ ➋✺↔✷➎ ➒❅↕ ➍✴↔ n ➘❛➋❋➋❋➛❄➏ ➣❇➚❍➒✴➐☛↕✺↕ ➋❄➪✐➑☛➍❪➋✺➪☛↕☛➷❋➪☛↕✺➒❅➑❳➏ ➐❋➷➄➪☛↕✢➣✐➏ ➎ ➍❦➣ ➋❛↔ ➒✢➐✐➋➄↕☛➠✐➍✺↔➄➝✝➋❛➌❪➌❘➒✴➐☛➛❳➙✒➔❋➪☛↕❏➌❬➋✢↔ ➍❪➋❛➐❍↕☛➠❋➏ ➑❳➎ ➒❙↕✲➍✢↔ ➜ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥✍✙

n

❼❫✭✴★s★➂✦✩✳❦✛❽✦✩✣✥❾❪✬

>

❡P✜ ❢P✪▲✤▼✦✩★✫✪

n

➧❫✽✴✸❏❁ ✻ ✽❇✾❋◆❖❀❻❿❙➀ r❜r❄q✴♣✶➁❏➬ ❀❳❀❙◆❖✸✺✹❍✿❙◆❍◆❲✹ ❧✄♠ ♥❲♦✒➮❶q❇r❺♦

n

➱→✃✺❐❘⑤✝❒❄⑤✖② ❮✐❐❬③●❡P✜ ❢P✪▲✤▼✦✩★✫✪❴② ❰❪② ❮❳❐✩Ï✺② ③❫❮✐③

n

Ð✺❀❅✽

>>

❁ ❉❋❀❅◆❲✽❇❆❫✸❻◆❖✹❴❆❬■✺■❙✽❘❉❋✸❴◆❲✹❴❑✥❁ ❚ ✽

n

Ñ✺❐✩Ò❬✃✺❐✩③●③▲❮✐Ó✶❐❘⑤✝⑤✧Ò✷Ô ④❘Õ✶❐

n

Ð✺❀❅✽

>&

✹❍✻ >>& ❁ ❉❋❀❅◆❲✽❇❆✴✸❴◆❖✹✼✻ ✽✴✸❏❁ ✻ ✽❇✾❅◆❳❱❋✹✢◆✖❈ ❀❅◆❲✸✢✹❍✿❋◆❍❯Ö❀❅◆❖✸✺✽✶✻P✻❛◆❲✹❴◆✖❈❋✽❄❀✒❆❘❝❳✽❄❑✥❁ ❚ ✽ n ➏ ➐❏➝✝➑❃➠❋×❛➔☛➒❅➑❃➠❍➑✐➋❛➌❬➍❙➚❳➠☛➒❅↕✺➛✺➏ ➣ ➣ ➍✢↔ ➍✢➐☛↕

SLIDE 2

• ✁✄✂✄☎✝✆

✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ➥

n

➦❏❁ ❉❋✾❙✽❄✹✶✿❋◆✒■✴✿❋◆❳✻ ✽✴✸❍❁ ✻ ✽❇✾❙◆✒❁ ✹✶❉●❁ ❀▼✽❫❆❇❀❅❨▲❭➞❝◗❆❘❉❋❨❽Ð❏❉✺❁ ✁ ■✺✻ ✹✴❊❏✻ ❆❬❝◗❀▼✸✴✽✴❑✥❁ ❉❋✽❫✸●◆❲✹✼■✺✻ ✹❇✸❏✿❋✾❙✽❄◆✒❈❅✽❬❁ ✻❛✹❍✿❙◆✒■✺✿❋◆❍✹✶❉ ❀❅◆❲✸✢✹❍✿❋◆❖❭❘❆❘❉❋✸●◆✒❈❙✽❘❉●❚ ✽✴◆❳✿❋❀✒✽❘✻ ❀▼✸✴✽✴✾✢❁ ✸✺✽✱❵✱❈❋❆❇◆❍◆❲✹❄✸✢✹ ❵✱❁ ◆✒❈●❁ ◆

n

✂▲❁ ✄✥✽❫❵❄❁ ❀❅✽❇❭➞❝◗❆❘❉❋❨❽■✺✻ ✹✴❊❏✻ ❆❘❝◗❀◗✸✢✽✴❑✥❁ ❉❙✽❫✸●◆❲✹❴◆❲❆☎✄✥✽ ◆✖❈❋✽✶❁ ✻❶❁ ❉✺■✺✿❋◆❍❑✥✻ ✹✶❝➤➨ ✉ q❇♣❍➁❙q✴✈❙➁▼♠ ♣✺➫ ➩ ✉ ⑦✝➨ ✉❖➁❋♠ ♣ ⑧☛❭❪❁ ❑❦❉❋✹ ✽✆✁✩■✺❚ ❁ ✾✺❁ ◆❍❑✥❁ ❚ ✽❜❆✶✻ ❊❍✿✢❝◗✽❘❉❋◆❲❀❳❆❘✻ ✽❄❊❍❁ ❂▲✽❘❉ n ➑✝↕✲➛✺➏ ➐❏➛❙➍❙➣ ➒✴➪➄➎ ↕✲➑❏↕ ➋❳↕☛➠✐➍✞✝❖➍❙➓❇➔P➋➄➒✴↔ ➛ n ➝✥➒✴➐◗➔✐➍❩↔ ➍❙➛✢➏ ↔ ➍❋➝✝↕ ➍❋➛❳↕ ➋❳➒❪➣P➏ ➎ ➍❜➪☛➑➄➏ ➐☛➡

<

n

✟❤✹✴✸✺✽❘❚ ✠❬➨ ✉❲➁❙♠ ♣

→

■✢✻ ✹✢❊❏✻ ❆❬❝

→

➨ ✉❲➁ ➀❇➩ ✉ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✡

n

☛❏④ ❐✩Ï✌☞❍Ô ④❬② ❮❦❮✎✍✶② ③✑✏✶Õ❍② ❰P④✶⑤✓✒ ② Õ✔☞✕✏❍❮✗✖❇④☎✏❍❮✘☞✕✏❍❮ ☞✶⑤✥④☎✙❇❐✩③▲③❫② Õ✕✚❍❷✛✙✴Ò✷Õ Ò✷⑤✖⑤✥Ò✩Õ✕✚✶❐✼③▲❐✢✜✔✏✶❐❬Õ✔✙❫❐✩③❴④❘❰ ☞✶⑤✥④✣✚❍⑤✥Ò✢✒➂③❴② Õ✤☞✶② ☞❘❐❬Ô ② Õ✶❐✩③

n

✵✩✰✐✛✢✜ ✳

→

❼✒★✫✛✔✥✧✦→❼✒★✫✛✩★✪✦➟✬✫✦❩❼❅★✫✛✴✤

→

✵✩✰✐✛✶✭✕✬❍✰ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✆

n

➉✺❁ ■❅✽✶❚ ❁ ❉✺❁ ❉❙❊➂❚ ✽❇❆✴✸✺❀❳◆❲✹✼❚ ✹✴◆❲❀▼✹✴❑✶❀✴❁ ❝❄■✺❚ ✽❥✿❋◆✒❁ ❚ ❁ ◆✒❁ ✽✴❀◗◆✒❈❋❆❇◆ ✸✺✹❴✹✶❉❋✽✱◆✖❈✺❁ ❉❋❊❴❵❳✽✶❚ ❚❅◆✒❈❋❆❇◆❍✾❋❆❘❉❴❱❋✽❜✾❋✹❘❝❄❱✺❁ ❉❙✽❇✸●◆❲✹ ✾✢✻ ✽✴❆❇◆❲✽❺❁ ❉❙◆❲✽❘✻ ✽✴❀❅◆✒❁ ❉❅❊❻✽❇❑✄❑❖✽❇✾❋◆❖❀

n

➦✺✹✶❝◗✽❄❀❅✹❘✿✺✻ ✾❋✽❇❀✭✠ n cat ➾ echo ➾ ls ➾ find ➾ diff ➾ yes ➾ ➏ ➐➄➷❋➪☛↕✺➣✐➏ ➎ ➍❩↔ ➍❋➛✢➏ ↔ ➍❋➝✝↕✐➏ ➋✺➐

n

➦✺✹✶❝◗✽❄❑✥❁ ❚ ◆❲✽❘✻ ❀▼❯➤■✺✻ ✹✴✾❅✽✴❀❅❀❅✹❍✻ ❀✭✠ n grep ➾ sed ➾ sort ➾ uniq ➾ tee ➾ wc ➾ head ➾ tail

n

➦✺✹✶❝◗✽❄❀✴❁ ❉✌✄✥❀✭✠ n more ➾❫➋❛➪☛↕☛➷❋➪☛↕✺➣☞➏ ➎ ➍❜↔ ➍❙➛❛➏ ↔ ➍❙➝✥↕☛➏ ➋❛➐☛➾ > /dev/null ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✮

n

✯ ❒❄Ò✢✰✺③●❮✐④ Ó✶❐✩❰✐② Õ✶❐✧✰✺④☎✏❍⑤◗④❘❒❴Õ✤✙❇④☎✒✱✒sÒ❬Õ❘Ó✶③✣✲

n

✳Ö✻P❁ ◆❖✽❄❆s❉❅✽✴❵ ■✺✻ ✹✢❊❏✻ ❆❬❝◗❭❬✾❋✹❘❝❄■✺❁ ❚ ✽s❁ ◆❖❭❬❆❘❉❋✸✼■✺✿❋◆ ◆✖❈❋✽❄✽✆✁❃✽✴✾✢✿❋◆❖❆✶❱✺❚ ✽✱❀❙✹❘❝◗✽❇❵❄❈❅✽✶✻ ✽❺❁ ❉▼❨▲✹❘✿✺✻❶■❋❆❇◆✒❈ n ✴❃➍❙➒❅➴✒➓✖➚❍➍✴➏ ➡❛➠✐↕

n

✳Ö✻P❁ ◆❖✽❄❆●➨✴❿ ✈P♠ ➫❍✉ ❭⑨■✺✿❋◆❳❁ ◆❍❀❅✹❍❝❳✽❇❵✱❈❙✽❘✻ ✽❺❁ ❉✧❨▲✹❍✿✺✻ ■❋❆❇◆✒❈ n ✵✒➏ ➡❛➠☛↕✲➚❘➍✺➏ ➡✺➠☛↕

n

✶❛✽✴❑✥❁ ❉❋✽❄❆❘❉ q✴♥ ♠ q ➨✖❭❘✽❘➹ ❊❍➹❬❁ ❉✧❨▲✹❍✿✺✻❶➹ ✾❋❀✴❈✺✻ ✾ n ✷❅➎ ➓✒➚❘➍✺➏ ➡✺➠☛↕ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✚

n alias

✦✷❢ ✜ ✦❬✵▲✤◗✦❬★✫✪➂❼❇✭❇★✼★✼✦✩✳❦✛ ✦✷✣✥❾❪✬

n

✶✷✽❇❑✖❁ ❉❋✽❇❀ q❇♥ ♠ q ➨ ➮❶q❫rs♦ ◆❖✹✼❱❋✽✱❆❘❉▼❆✶❱✴❱✺✻ ✽❇❂✩❁ ❆❇◆✒❁ ✹✶❉ ❑❖✹✶✻➞❿❙➀ r❄r❜q✴♣❍➁▼q✴✈✹✸ ⑩

n

✳ ❈❋✽❘❉❋✽❇❂❃✽✶✻❛◆❲❨✩■❙✽ q❇♥ ♠ q ➨ ➮❤q❫rs♦❦q✴♥ ♠ q ➨✻✺ ✈✹✸ ⑩✫❆✴◆❍◆✖❈❋✽ ❀✢❈❙✽✶❚ ❚✢■✢✻ ✹✶❝❄■❙◆❲❭❪✻ ✽❬■✺❚ ❆❇✾❅✽✴✸❴❵✱❁ ◆✒❈ ❿❋➀ r❄r✱q❇♣❏➁▼q❇✈✹✸ ⑩ q❇♥ ♠ q ➨✻✺ ✈✹✸ ⑩ n ✼❃➋❋➍❙➑❃➐✐➯ ↕✴➚✶➋❛↔✽✝➞➏ ➐✶➋❋↕☛➠✐➍✢↔➄➝✥➋✺➐☛↕ ➍✿✾✖↕✲➑☛➾ ➍✌❀ ➡❁❀ –exec ➒✴↔ ➡➄➑ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ❞

n

❂➞❚ ❁ ❆❇❀❙✽❇❀❳❵◗✹✶✻✹✄❦❑✄✹❍✻❛✹✶❉❙✽✴➈❙❚ ❁ ❉❋✽❘✻ ❀

n

❃❅✹✶✻❤❝❳✹❍✻ ✽❄✾❙✹❘❝❄■✺❚ ✽❄✁❜◆❖❆✴❀✭✄✥❀❅❭❘✾❅❆❘❉▼❵❄✻P❁ ◆❲✽❴➨✿❅ ♦❅♥ ♥ ➨✴❿ ✈P♠ ➫❏✉ ➨

n

❂❥❀❅✾✺✻P❁ ■❋◆❳❁ ❀❳❆❄❑✥❁ ❚ ✽❜✾❋✹✶❉❋◆❲❆❘❁ ❉✺❁ ❉❙❊❴❆❄❀❅✽✆❆❍✿❋✽❘❉❋✾❙✽❄✹✢❑ ✻ ✽✴❊❍✿✺❚ ❆✶✻❏Ð❏❉✺❁ ✁→❀✢❈❙✽✶❚ ❚✒✾❋✹✶❝✱❝◗❆❘❉❙✸✺❀ n ➝✝➒✢➐❳➏ ➐✐➝▲➎ ➪✐➛➄➍❪➝☛➋❛➐☛↕☛↔ ➋✺➎✐➑☛↕☛↔❖➪✐➝✝↕☛➪❋↔ ➍❪➝☛➋❛➌❪➌❘➒✴➐✐➛➄➑◗➎ ➏ ✝❲➍

if

➾

while

➾ foreach ➾ switch n ➝✝➒✢➐❳➏ ➐✐➝▲➎ ➪✐➛➄➍❪➒✴↔ ➡✺➪➄➌❘➍✢➐☛↕❏➷❙↔ ➋➄➝☛➍❋➑☛➑➄➏ ➐☛➡❦➋❛➷P➍✴↔ ➒❙↕☛➏ ➋❛➐☛➑

n

⑦ .cshrc ❁ ❀❈❇❋✿❙❀❙◆❍❆✱❀❙✾✢✻P❁ ■❋◆❳✻P✿✺❉▼❆❇◆❳❚ ✹✴❊✺➈❙❁ ❉❋⑧

SLIDE 3

• ✁✄✂✄☎✝✆

✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ❹

n

✁ ✏✶③❫❮❦③❫❮☛Ò✩⑤✖❮❦❒❄② ❮✘✍

#!/bin/csh

n

✂⑨❈✢❁ ❀◗❀❅❆✴❨▲❀◗◆✒❈❙❆❇◆ /bin/csh ❀✴❈❋✹❍✿✢❚ ✸✼❱❋✽s✿❋❀✒✽❇✸ ◆❲✹✼❁ ❉❋◆❲✽❘✻P■✺✻ ✽❇◆❍◆✒❈❋✽❺✻ ✽✴❀❅◆❍✹✢❑❘◆✒❈❙✽❺❚ ❁ ❉❅✽✴❀

n

➇❬❆❘❉●✿❋❀❅✽✱✹✢◆✖❈❋✽❘✻❤❁ ❉❋◆❖✽✶✻P■✺✻ ✽✴◆❖✽✶✻❶■✺✻ ✹✢❊❍✻ ❆❬❝◗❀❅❭ ✽✶➹ ❊❏➹ /bin/perl ❭ /bin/sh ❭❪⑩

n

✁ ✏✶③❫❮☎✄✶❐✱✒➂Ò✩⑤✝✆✺❐❬ÓÖÒ✷③❴❐❘Ï✺❐✢✙✆✏❍❮☛Ò✞✄❍Ô ❐

n chmod +x

➨✴❿ ✈P♠ ➫❏✉ ➮❶q❇r❺♦

n

✁ ✏✶③❫❮☎✄✶❐✼② Õ ÒsÓ✶② ⑤✝❐✣✙❇❮✐④✶⑤ ✰❥② Õ ❮ ✍❘❐ ☞✶Ò✷❮ ✍ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ➥ ✞

n

✂❤❈❋✽

argv

❀✴❈❋✽❘❚ ❚❅❂▲❆❘✻P❁ ❆❬❱✺❚ ✽❺❁ ❀▼❀❅✽❇◆❍◆❲✹❄◆✖❈❋✽s❚ ❁ ❀❙◆❍✹✴❑ ❆✶✻ ❊❍✿✺❝❳✽❘❉❋◆❲❀◗◆❲✹❴◆✖❈❋✽❄❀✴❈❙✽❘❚ ❚ n $argv ➍✿✾❇➷✐➒✴➐☛➛➄➑❏↕ ➋❳↕☛➠☛➍❩➎ ➏ ➑☛↕✢➋➄➣✴➒✴↔ ➡✺➪➄➌❘➍✢➐✐↕✲➑ n $* ✟ ✠☛✡☞✠✍✌✏✎✝✑✒✎✝✌✏✓✕✔ ✑✗✖ $argv

n $

✘ q❇✈ [ ♣ ] ✻ ✽❇❑❖✽❘✻ ❀▼◆❖✹❴◆✒❈❋✽ ♣☛✙ ✚ ✽❘❚ ✽✶❝❦✽✶❉❅◆❍✹✢❑✶◆✖❈❋✽✛✘ q❇✈ ❚ ❁ ❀❅◆ n $argv[ ➸ ] ➏ ➑❏↕☛➠☛➍❩➐✐↕☛➠❏➑➄➠☛➍✴➎ ➎✐➒✢↔ ➡✺➪➄➌❘➍✢➐☛↕ n $ ✜✞✟ ✠✢✡✣✠✍✌✤✎✗✑✗✎✗✌✏✓✥✔ ✑✦✖ $argv[ ✜ ]

n $#

✘ q❇✈ ✻ ✽❇❑✍✽✶✻ ❀◗◆❲✹❴◆✒❈❙✽s❚ ✽✶❉❙❊✺◆✒❈✧✹✢❑❬◆✒❈❋✽✧✘ q✴✈ ❚ ❁ ❀❙◆ n $#argv ➏ ➑❏↕☛➠☛➍❩➐➄➪❋➌❪➔☛➍✢↔➄➋➄➣❇➑❃➠✐➍✴➎ ➎☛➒❇↔ ➡❛➪❋➌❘➍✺➐✐↕✲➑

n $0

❁ ❀◗◆✒❈❋✽❥❉❋❆❬❝◗✽❄✹✴❑❘◆✒❈❙✽❄❀❅✾✺✻P❁ ■❋◆❦❱❙✽✶❁ ❉❙❊➂✻P✿✺❉ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ✟

n foreach

★✐✦✩✣✥✤▼✦✩★✫✪ ( ✦✷✣✥❾❪✬

)

✬✪✩❦✭❘✛✢✫ ❼❫✭✴★s★✼✦✷✳❳✛❽❢ ✜ ✳❪✪❫✵s✬

end

n

❀❙✽❇◆❲❀✬✘ q✴✈P➮❶q❫rs♦ ◆❖✹❄✽✴❆❇✾✢❈ q✴✈✹✸ ❁ ❉✧◆✒✿✺✻P❉ n ➵❅➻✮✭✰✯ ➏ ➑❍➋❋➣ ↕✲➍✢➐❏➒❩➷✐➒❙↕✲↕ ➍✺↔✄➐

n

✽✴❂▲❆❘❚ ✿❋❆✴◆✄✽❇❀✲✱❏➀ ➁✴✳ ❿❋➀ r❄r✱q❇♣❏➁▼♥ ♠ ♣❏♦ ➨❦❑✄✹❍✻❛✽✴❆❇✾✢❈ ❀❙✽❇◆❲◆✖❁ ❉❋❊ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡✄✙

n foreach f (*.htm *.html)

echo "moving $f to www/$f" mv $f www end

n foreach arg ($*)

…

✛✶✭●✵❬✭❇★✫✪❘✰ ✵❍✜ ✳❘❾ ✰☛✭ $arg …

end

✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ➥

n

✶❪❑✄◆❲✽❘❉▼❵◗❆❘❉❋◆❍◆❖✹s■✺✻ ✹✢✾❙✽❇❀❙❀◗❀✴❈❋✽✶❚ ❚❅❂▲❆✶✻P❁ ❆❬❱✺❚ ✽❥❱✺❁ ❉❋✸❍❁ ❉❋❊✺❀ ⑦☛✽✶➹ ❊❏➹ foreach ❚ ✹✢✹❘■✧❂▲❆✶✻P❁ ❆❘❱✺❚ ✽❇❀❅⑧

n

➇✩❆✶❉✧❆❫✸✺✸✑❆❏✿❙❆✶❚ ❁ ❑✥❁ ✽❘✻ ❀▼◆❖✹❴✽❄✁▲◆✒✻ ❆❇✾❋◆❳■✺❁ ✽❇✾❅✽✴❀◗✽✶➹ ❊❏➹❫✹✢❑ ■❋❆❇◆✒❈✢❉❋❆❬❝◗✽✴❀

n

❁ ❑ $var ✷✸✷

a/b/c.d.e

❭❘◆✖❈❋✽❬❉ n ➠☛➍❙➒❙➛✺✹ $var:h ✻✼✻

a/b

n ↕✲➒✢➏ ➎ ✹ $var:t ✻✣✻

c.d.e

n ↔ ➋❙➋➄↕✦✹ $var:r ✻✼✻

a/b/c.d

n ➍ ✾✒↕ ➍✢➐☛➑➄➏ ➋✺➐✽✹ $var:e ✻✾✻

e

n

➇✩❆✶❉●✻ ✽❘■❙✽❇❆✴◆❪❝◗✹✢✸❏❁ ❑✥❁ ✽✶✻ ❀❅❭❬✽✶➹ ❊❏➹ $var:h:h ✷☎✷

a

✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ✡

n foreach f (*.htm)

set g = ${f:r}.html echo "fixing ext'n of $f to $g" mv $f $g end

n

✿✷✹✴◆❲✽❄◆✖❈❋❆❇◆❍✾❋❆❘❉❴✿❋❀❅✽✴❀✱❱✺✻ ❆❇✾❋✽❇❀❳❆✴❑✄◆❲✽❘✻ $ ◆❲✹❴✾✢❚ ✽✴❆❘✻P❚ ❨ ❁ ✸✺✽✶❉❙◆✒❁ ❑❖❨❩◆✒❈❙✽✱❂▲❆❘✻P❁ ❆✶❱✺❚ ✽✱❀✢✿✢❱❋❀❅◆✒➹❇✽❄✁✩■✺✻P➹

SLIDE 4

• ✁✄✂✄☎✝✆

✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ✆

n if (expr) then

… commands … else if (expr2) then … commands … … else … commands … endif

n ✁✝➍✴↔ ➋❳➋✢↔✷➌❬➋✢↔ ➍❪➍✢➎ ➑☛➍✄✂✖➏ ➣❇➝✥➒❅➑☛➍❋➑ n ➋❛➷☛↕☛➏ ➋❛➐✐➒✢➎P➍✢➎ ➑✐➍❳➝✝➒❅➑☛➍ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡✗✮

n

➦✺◆✒✻P❁ ❉❋❊●✾❙✹❍❝❜■❋❆✶✻P❁ ❀❅✹❍❉❙❀✆✠ == ❭ !=

n

➦✺◆✒✻P❁ ❉❋❊➂■❋❆❇◆❲◆❖✽✶✻P❉❙➈❅❝◗❆❇◆❲✾✢❈✺❁ ❉❙❊ ✠ =~ ❭ !~

n

✿❤✿✢❝◗✽✶✻P❁ ✾◗✾❋✹✶❝✱■❋❆❘✻P❁ ❀❙✹✶❉❋❀❳❯Ö✹❍■❅✽✶✻ ❆❇◆❲✹✶✻ ❀❙❭❬✽✶➹ ❊❏➹ + ❭ <

n

☎❃✹✢✹❍❚ ✽❇❆✶❉▼✽✆✁✷■✺✻ ✽❇❀❅❀✴❁ ✹✶❉❋❀❅❭❘✽❘➹ ❊❏➹ && ❭ || ❭ !

n

➉❋❆❘✻ ✽✶❉❋◆✖❈❙✽❇❀✴❁ ✆❅✽❇✸❴❀✴✿✺❱❙✽✆✁✩■✺✻ ❀

n if ("$f" == README || "$f" =~ *.c)

✯

n if ($#argv < 2)

✯ ✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ✚

n

✝❶Ô ③▲④ ✙❇Ò✷Õ ❮✐❐❬③❫❮ ☞❍⑤✥④✣☞✶❐❘⑤✝❮✝② ❐❬③❴④✶❰❪❰P② Ô ❐❬③

n -e

❧✄♠ ♥✄♦❅➮❶q❫rs♦ ✠ ❧✄♠ ♥❖♦✒➮❶q❫rs♦ ✽✆✁✩❁ ❀❅◆❲❀✄✞

n -f

❧✄♠ ♥✄♦❅➮❶q❫rs♦ ✠ ❧✄♠ ♥❖♦✒➮❶q❫rs♦ ❁ ❀❳❆❺■✺❚ ❆❘❁ ❉❳❑✖❁ ❚ ✽✟✞

n -d

❧✄♠ ♥✄♦❅➮❶q❫rs♦ ✠ ❧✄♠ ♥❖♦✒➮❶q❫rs♦ ❁ ❀❳❆✱✸❏❁ ✻ ✽❇✾❋◆✄✹❍✻ ❨✠✞

n -x

❧✄♠ ♥✄♦❅➮❶q❫rs♦ ✠ ❧✄♠ ♥❖♦✒➮❶q❫rs♦ ❁ ❀❳✽✭✁❃✽❇✾✢✿❋◆❲❆❬❱✺❚ ✽✡✞

n if (-e $f && ! –d $f)

✬ ✁✍✂✄☎✝✆✲✞ ✟ ✠✝✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡✲❞

n while n break

❷ continue

n switch

❷ case ❷ default ❷ breaksw

n shift n exit n pushd

❷ popd

n time

✁✄✂✄☎✝✆ ✞ ✟ ✠☛✡ ✡☞✁✍✌ ✎ ✏ ✑✒✁✄✓ ✎ ✔✖✕ ✗ ✌ ✘ ✡ ❹

n

☛◗④❘❒ ② ③❴③ ✍❘❐❘Ô Ô❬③❄✙✴⑤✝② ☞❍❮ ☞✶⑤✥④☎✚✶⑤✖Ò✢✒✱✒✼② Õ☎✚ Ó✶② ❰P❰P❐❘⑤✝❐❬Õ❍❮❦❰✐⑤✥④✕✒✮⑤✝❐☎✚✕✏✶Ô Ò❬⑤ ☞✶⑤✥④✣✚❍⑤✖Ò✣✒✱✒s② Õ✔✚✌☞

n

✂✩❨✩■❙✽✴❀

n

✶✷✽❇✾✺❚ ❆❘✻ ❆✴◆✖❁ ✹❍❉❋❀

n

➉✺✻ ✹✢✾❙✽✴✸✶✿✺✻ ✽❇❀

n

✶✷❆❇◆❲❆❄❀❅◆✖✻P✿❋✾❋◆✖✿✺✻ ✽❇❀

n

➉✺✻P❁ ❝❄❁ ◆✒❁ ❂▲✽✡✍➄❱✢✿✺❁ ❚ ◆❖➈❙❁ ❉➟✹❘■❋✽❘✻ ❆✴◆✖❁ ✹❍❉❋❀

n

✂▲❁ ❱✢✻ ❆✶✻P❁ ✽❇❀

n

➇❬✹✶❝❄■✺❁ ❚ ❆✴◆✖❁ ✹❍❉✎✍☛✽❄✁▲✽✴✾✢✿❋◆✒❁ ✹❘❉●❝◗✹✴✸✢✽✶❚