8 Misalai masu Amfani na Linux "Taba" Umurnin

A cikin Linux kowane fayil yana da alaƙa da timestamps, kuma kowane fayil yana adana bayanin lokacin samun damar ƙarshe, lokacin gyara na ƙarshe da lokacin canji na ƙarshe. Don haka, duk lokacin da muka ƙirƙiri sabon fayil, samun dama ko gyaggyara fayil ɗin da ke akwai, ana sabunta timestamps na wannan fayil ɗin ta atomatik.

A cikin wannan labarin zamu rufe wasu misalai masu amfani na umarnin taɓa Linux. Umurnin taɓawa shiri ne na yau da kullun don tsarin aiki na Unix/Linux, wanda ake amfani dashi don ƙirƙira, canzawa da sauya timestamps na fayil. Kafin tafiya sama don misalan umarnin taɓawa, don Allah a duba zaɓuka masu zuwa.

Taɓa Zaɓuɓɓukan Dokoki

  1. -a, canza lokacin samun damar kawai
  2. -c, idan fayil ɗin babu, kar a ƙirƙira shi
  3. -d, sabunta lokacin isowa da gyare-gyare
  4. -m, canza lokacin gyara kawai
  5. -r, yi amfani da damar isowa da sauye sauye na fayil
  6. -t, ƙirƙirar fayil ta amfani da takamaiman lokaci

1. Yadda Ake Kirkirar Fayil mara Komai

Umurnin taɓawa mai zuwa yana ƙirƙirar sabon fayil (sifili baiti) mai suna sheena.

# touch sheena

2. Yadda ake Kirkirar Fayiloli da yawa

Ta amfani da umarnin taɓawa, zaka iya ƙirƙirar sama da fayil guda ɗaya. Misali umarni mai zuwa zai kirkiri fayel 3 mai suna, sheena, meena da leena.

# touch sheena meena leena

3. Yadda Ake Canza Samun Fayil da Lokacin Gyarawa

Don canzawa ko sabunta damar ƙarshe da sauye-sauye na fayil ɗin da ake kira leena, yi amfani da -a zaɓi kamar haka. Umurnin mai zuwa yana saita lokaci da kwanan wata na yanzu akan fayil. Idan fayil ɗin leena bai wanzu ba, zai ƙirƙiri sabon fayil ɗin fanko tare da suna.

# touch -a leena

Shahararrun umarnin Linux irin su umarnin ls yana amfani da timestamps don jerin abubuwa da nemo fayiloli.

4. Yadda Ake Guji Kirkirar Sabon Fayil

Amfani da -c zaɓi tare da umarnin taɓawa yana hana ƙirƙirar sabbin fayiloli. Misali umarni mai zuwa ba zai kirkiri fayil mai suna leena ba idan babu shi.

# touch -c leena

5. Yadda Ake Canza Lokacin Gyara fayil

Idan kuna son canza lokacin gyarawa kawai na fayil ɗin da ake kira leena, to, yi amfani da zaɓin -m tare da umarnin taɓawa. Lura cewa kawai zai sabunta lokutan gyara na ƙarshe (ba lokutan samun dama ba) na fayil ɗin.

# touch -m leena

6. Bayyane Saiti lokutan Samun dama da Sauyawa

Zaka iya bayyane saita lokaci ta amfani da -c da -t zaɓi tare da umarnin taɓawa. Tsarin zai kasance kamar haka.

# touch -c -t YYDDHHMM leena

Misali umarni mai zuwa yana saita damar da sauye sauye da lokaci zuwa leena mai fayil kamar 17:30 (17:30 pm) 10 ga Disamba na wannan shekarar (2012).

# touch -c -t 12101730 leena

Na gaba tabbatar da samun dama da lokacin gyara fayil ɗin leena, tare da umarnin ls -l.

# ls -l

total 2
-rw-r--r--.  1 root    root   0 Dec 10 17:30 leena

7. Yadda ake Amfani da tambarin lokaci na wani Fayil

Umurnin taɓawa mai zuwa tare da -r zaɓi, zai sabunta hatimin lokaci na fayil meena tare da hatimin lokaci na fayil ɗin leena. Don haka, duka fayil ɗin suna riƙe da hatimin lokaci guda.

# touch -r leena meena

8. Createirƙiri Fayil ta amfani da takamaiman lokaci

Idan kuna son ƙirƙirar fayil tare da takamaiman lokaci banda lokacin yanzu, to tsarin ya zama.

# touch -t YYMMDDHHMM.SS tecmint

Misali umarnin da ke kasa umarnin tabawa tare da -t zabin zai ba fayil din tecmint tambarin lokaci na 18:30:55 pm a ranar 10 ga Disamba, 2012.

# touch -t 201212101830.55 tecmint

Mun kusan rufe dukkan zaɓuɓɓukan da ke cikin umarnin taɓa don ƙarin zaɓuɓɓuka suna amfani da "man touch". Idan har yanzu mun rasa kowane zaɓi kuma kuna son sakawa a cikin wannan jeren, da fatan za a sabunta mu ta akwatin sharhi.