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這篇文章給大家分享的是有關(guān)linux系統(tǒng)中如何使用touch命令的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來看看吧。
linux的touch命令不常用,一般在使用make的時(shí)候可能會(huì)用到,用來修改文件時(shí)間戳,或者新建一個(gè)不存在的文件。
如果創(chuàng)建一個(gè)新文件有很多種方法,比如:
vi file cat > fileecho "hello,world" > file touch file touch命令不僅可以創(chuàng)建新文件,而且可以修改文件的時(shí)間屬性;
格式: touch [option] [file]
備注:
\1) -t選項(xiàng)的時(shí)間格式[[CC]YY]MMDDhhmm[.ss]說明:\2) touch命令的幾點(diǎn)說明:
linuxidc@linuxidc:~/linux/mkdir$ ls linuxidc@linuxidc:~/linux/mkdir$ touch a.txt linuxidc@linuxidc:~/linux/mkdir$ ls a.txt linuxidc@linuxidc:~/linux/mkdir$ touch b.txt c.txt linuxidc@linuxidc:~/linux/mkdir$ ls a.txt b.txt c.txt linuxidc@linuxidc:~/linux/mkdir$ touch {1..5}.txt linuxidc@linuxidc:~/linux/mkdir$ ls 1.txt 2.txt 3.txt 4.txt 5.txt a.txt b.txt c.txt
linuxidc@linuxidc:~/linux/mkdir$ touch linuxidc.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 0 Blocks: 0 IO Block: 4096 regular empty file linuxidcice: 807h/2055d Inode: 9569451 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:25:16.439856937 +0800 Modify: 2018-05-01 17:25:16.439856937 +0800 Change: 2018-05-01 17:25:16.439856937 +0800 Birth: - 最后有3個(gè)時(shí)間 Access time: 最后訪問時(shí)間,查看文件的內(nèi)容時(shí),這個(gè)時(shí)間會(huì)改變,使用cat命令查看文件時(shí),可以看出Access time已經(jīng)變了 linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 0 Blocks: 0 IO Block: 4096 regular empty file linuxidcice: 807h/2055d Inode: 9569451 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:25:16.439856937 +0800 Modify: 2018-05-01 17:25:16.439856937 +0800 Change: 2018-05-01 17:25:16.439856937 +0800 Birth: - linuxidc@linuxidc:~/linux/mkdir$ cat linuxidc.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 0 Blocks: 0 IO Block: 4096 regular empty file linuxidcice: 807h/2055d Inode: 9569451 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:27:51.887215139 +0800 Modify: 2018-05-01 17:25:16.439856937 +0800 Change: 2018-05-01 17:25:16.439856937 +0800 Birth: - Modify time:最后修改時(shí)間,修改文件內(nèi)容,文件的修改時(shí)間會(huì)改變。訪問時(shí)間和狀態(tài)改變時(shí)間 也發(fā)生變化 linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 0 Blocks: 0 IO Block: 4096 regular empty file linuxidcice: 807h/2055d Inode: 9569451 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:27:51.887215139 +0800 Modify: 2018-05-01 17:25:16.439856937 +0800 Change: 2018-05-01 17:25:16.439856937 +0800 Birth: - linuxidc@linuxidc:~/linux/mkdir$ vim linuxidc.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:29:35.018231392 +0800 Birth: - Change time:狀態(tài)改變時(shí)間,修改文件內(nèi)容,移動(dòng)文件,或者改變文件屬性等,文件的change time會(huì)發(fā)生改變. 1,移動(dòng)文件( 重命名 ), change time 發(fā)生改變: linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc.txt File: 'linuxidc.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:29:35.018231392 +0800 Birth: - linuxidc@linuxidc:~/linux/mkdir$ mv linuxidc.txt linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:32:25.392863791 +0800
linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:32:25.392863791 +0800 Birth: - linuxidc@linuxidc:~/linux/mkdir$ chmod 777 linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0777/-rwxrwxrwx) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:33:31.602584110 +0800 Birth: - touch -m修改文件的modify和change時(shí)間 linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0777/-rwxrwxrwx) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:29:34.982228802 +0800 Change: 2018-05-01 17:33:31.602584110 +0800 Birth: - linuxidc@linuxidc:~/linux/mkdir$ touch -m linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0777/-rwxrwxrwx) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2018-05-01 17:29:34.982228802 +0800 Modify: 2018-05-01 17:34:31.678864985 +0800 Change: 2018-05-01 17:34:31.678864985 +0800 touch -d修改創(chuàng)建后的文件的修改時(shí)間 linuxidc@linuxidc:~/linux/mkdir$ ls -lh linuxidc2.txt -rwxrwxrwx 1 linuxidc linuxidc 5 5月 1 17:34 linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ touch -d 20190218 linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ ls -lh linuxidc2.txt -rwxrwxrwx 1 linuxidc linuxidc 5 2月 18 2019 linuxidc2.txt linuxidc@linuxidc:~/linux/mkdir$ stat linuxidc2.txt File: 'linuxidc2.txt' Size: 5 Blocks: 8 IO Block: 4096 regular file linuxidcice: 807h/2055d Inode: 9569550 Links: 1 Access: (0777/-rwxrwxrwx) Uid: ( 1000/ linuxidc) Gid: ( 1000/ linuxidc) Access: 2019-02-18 00:00:00.000000000 +0800 Modify: 2019-02-18 00:00:00.000000000 +0800 Change: 2018-05-01 17:37:13.031347481 +0800 Birth: -
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