四劍客第三關
1 find使用方法：
根據檔案大小查詢 命令：
根據檔案許可權查詢資料 ：
find /etc/passwd -type f -size +10M
find /etc/passwd -perm 755
[root@master ~]# find /etc/passwd -type f -size +10M
[root@master ~]# find /etc/passwd -perm 755
2 把 abc壓縮成格式如 2020-09-29.abc.tar.gz
tar -zcf "$(date +%Y-%m-%d).abc.tar.gz" abc
[root@master ~]# cat abc
dshjfgsd
sdkfhksdf
sdkfgsdf
flksehfhes
sakhjfasjghdfas
fjnksdfsdjf
sdfjkhsdjfse
sajkefhjsegf
wenrjeshfukse
wejnrkhefghwe
rasejghfujiwebf
'fsebjfhse
ejkrgsefhe
sekfbegfe
askefseuifbwejfsekjtg
wjkerusegufhbse
sejnkrghsehjfge
tnwejfhwejfbwe
asnjefghesjkf
se'e,k
ejkrgseuiuhe
enrjsehfwe
awejkfjiwehf
sejkhrsehfw
'arnweh
serheuishfuihwe
[root@master ~]# tar -zcf "$(date +%Y-%m-%d).abc.tar.gz" abc
[root@master ~]# ls
10.txt 14.txt 18.txt 20.txt 3.txt 7.txt anaconda-ks.cfg nwq1.6.sh
11.txt 15.txt 19.txt 21.txt 4.txt 8.txt CentOS6-Base-163.repo profile
12.txt 16.txt 1.txt 22.txt 5.txt 9.txt hosts
13.txt 17.txt 2024-03-14.abc.tar.gz 2.txt 6.txt abc motd
3 解壓如上檔案
tar -xzf "2020=09-29.abc.tar.gz"
tar -xzf "2024-03-14.abc.tar.gz" -C /test 解壓到目錄
[root@master ~]# tar -xzf "2024-03-14.abc.tar.gz" -C /test
[root@master ~]# cd /test
[root@master test]# ls
abc
[root@master test]# cat abc
dshjfgsd
sdkfhksdf
sdkfgsdf
flksehfhes
sakhjfasjghdfas
fjnksdfsdjf
sdfjkhsdjfse
sajkefhjsegf
wenrjeshfukse
wejnrkhefghwe
rasejghfujiwebf
'fsebjfhse
ejkrgsefhe
sekfbegfe
askefseuifbwejfsekjtg
wjkerusegufhbse
sejnkrghsehjfge
tnwejfhwejfbwe
asnjefghesjkf
se'e,k
ejkrgseuiuhe
enrjsehfwe
awejkfjiwehf
sejkhrsehfw
'arnweh
serheuishfuihwe
4 美元符號：$ 表達什麼：
！作用：
| 作用：
xargs作用：
$ 引用變數或命令替換
! 執行歷史記錄或邏輯非操作 通常與[]結合使用
| 前一個命令的輸出作為後一個命令的輸入
5 查詢指定資料資訊進行復制 查詢出.txt檔案,批次複製到/tmp目錄
find . -name "*.txt" |xargs cp -t /tmp
或者
find . -name "*.txt" -exec cp {} /tmp \;
[root@master ~]# touch {1..22}.txt
[root@master ~]# ls
10.txt 13.txt 16.txt 19.txt 21.txt 3.txt 6.txt 9.txt hosts profile
11.txt 14.txt 17.txt 1.txt 22.txt 4.txt 7.txt anaconda-ks.cfg motd
12.txt 15.txt 18.txt 20.txt 2.txt 5.txt 8.txt CentOS6-Base-163.repo nwq1.6.sh
[root@master ~]# find . -name "*.txt" -exec cp {} /tmp \;
[root@master ~]# ls
10.txt 13.txt 16.txt 19.txt 21.txt 3.txt 6.txt 9.txt hosts profile
11.txt 14.txt 17.txt 1.txt 22.txt 4.txt 7.txt anaconda-ks.cfg motd
12.txt 15.txt 18.txt 20.txt 2.txt 5.txt 8.txt CentOS6-Base-163.repo nwq1.6.sh
[root@master ~]# cd /tmp
[root@master tmp]# ls
10.txt 14.txt 18.txt 21.txt 4.txt 8.txt yum_save_tx.2024-03-09.20-43.MjeG_P.yumtx
11.txt 15.txt 19.txt 22.txt 5.txt 9.txt
12.txt 16.txt 1.txt 2.txt 6.txt test01.txt
13.txt 17.txt 20.txt 3.txt 7.txt test.txt
6 查詢指定資料資訊進行移動 查詢出*.txt檔案,批次移動到/tmp目錄
find . -name "*.txt" -exec mv {} /tmp \;
[root@master ~]# touch {1..20}.txt
[root@master ~]# ls
10.txt 13.txt 16.txt 19.txt 2.txt 5.txt 8.txt CentOS6-Base-163.repo nwq1.6.sh test.txt
11.txt 14.txt 17.txt 1.txt 3.txt 6.txt 9.txt hosts profile
12.txt 15.txt 18.txt 20.txt 4.txt 7.txt anaconda-ks.cfg motd test01.txt
[root@master ~]# find . -name "*.txt"
./1.txt
./test.txt
./test01.txt
./2.txt
./3.txt
./4.txt
./5.txt
./6.txt
./7.txt
./8.txt
./9.txt
./10.txt
./11.txt
./12.txt
./13.txt
./14.txt
./15.txt
./16.txt
./17.txt
./18.txt
./19.txt
./20.txt
[root@master ~]# find . -name "*.txt" -exec mv {} /tmp \;
[root@master ~]# cd /tmp
[root@master tmp]# ls
10.txt 13.txt 16.txt 19.txt 2.txt 5.txt 8.txt test.txt
11.txt 14.txt 17.txt 1.txt 3.txt 6.txt 9.txt yum_save_tx.2024-03-09.20-43.MjeG_P.yumtx
12.txt 15.txt 18.txt 20.txt 4.txt 7.txt test01.txt
7 將以abc開頭的行找出來?
語法 grep "^abc" 檔名
grep "^abc" /etc/passwd
[root@master ~]# cat test01.txt
sdjfgs
sdjkhfjksdhf
sdfjksdkfhshd
sdjfhjsgf
sdkfhksduise
jkshfhsdb
ashdfsdf
linux fsdhfsdfjsfhshdfslinux
sdjfjsdfs
askjdfasugfugsef
sensfhasgf
asekfsehf
eksheshb
abcehiehkheke
ejkrsehfuies
abcehiiegbwejthiehi
efjhehew
rjkthrkhgwe
eklrhteh
etwehut
ethkeht
ejkfekhre
ehrkefie
nrekwhwet
ekhke
ektheh
[root@master ~]# grep '^abc' test01.txt
abcehiehkheke
abcehiiegbwejthiehi
8 將以linux結尾的行找出來?
grep 'linux$' 檔名
[root@master ~]# cat test01.txt
sdjfgs
sdjkhfjksdhf
sdfjksdkfhshd
sdjfhjsgf
sdkfhksduise
jkshfhsdb
ashdfsdf
linux fsdhfsdfjsfhshdfslinux
sdjfjsdfs
askjdfasugfugsef
sensfhasgf
asekfsehf
eksheshb
abcehiehkheke
ejkrsehfuies
abcehiiegbwejthiehi
efjhehew
rjkthrkhgwe
eklrhteh
etwehut
ethkeht
ejkfekhre
ehrkefie
nrekwhwet
ekhke
ektheh
[root@master ~]# grep 'linux' test01.txt
linux fsdhfsdfjsfhshdfslinux
9 將全部內容顯示,但不要顯示空行
grep -v '^$' 檔名
[root@master ~]# cat test01.txt
sdjfgs
sdjkhfjksdhf
sdfjksdkfhshd
sdjfhjsgf
sdkfhksduise
jkshfhsdb
ashdfsdf
linux fsdhfsdfjsfhshdfslinux
sdjfjsdfs
askjdfasugfugsef
sensfhasgf
asekfsehf
eksheshb
abcehiehkheke
ejkrsehfuies
abcehiiegbwejthiehi
efjhehew
rjkthrkhgwe
eklrhteh
etwehut
ethkeht
ejkfekhre
ehrkefie
nrekwhwet
ekhke
ektheh
[root@master ~]# grep -v '^$' test01.txt
sdjfgs
sdjkhfjksdhf
sdfjksdkfhshd
sdjfhjsgf
sdkfhksduise
jkshfhsdb
ashdfsdf
linux fsdhfsdfjsfhshdfslinux
sdjfjsdfs
askjdfasugfugsef
sensfhasgf
asekfsehf
eksheshb
abcehiehkheke
ejkrsehfuies
abcehiiegbwejthiehi
efjhehew
rjkthrkhgwe
eklrhteh
etwehut
ethkeht
ejkfekhre
ehrkefie
nrekwhwet
ekhke
ektheh
10 利用linux什麼命令真正統計目錄的大小?
du -sh /etc/passwd
[root@master ~]# du -sh /etc/passwd
8.0K /etc/passwd