# touch 파일명
# touch test.jsp
# ll
total 4
drwx------ 1 root root 4096 Dec 21 08:51 ./
drwxr-xr-x 1 root root 4096 Dec 8 11:36 ../
-rw------- 1 root root 401 Dec 8 17:38 .bash_history
-rw-r--r-- 1 root root 3106 Dec 5 2019 .bashrc
-rw-r--r-- 1 root root 0 Dec 21 08:35 .motd_shown
-rw-r--r-- 1 root root 161 Dec 5 2019 .profile
-rw-r--r-- 1 root root 0 Dec 8 12:00 ROOT.md
drwxr-xr-x 1 root root 4096 Dec 21 08:38 main/
-rw-r--r-- 1 root root 0 Dec 21 08:51 test.jsp
# touch --help
Usage: touch [OPTION]... FILE...
Update the access and modification times of each FILE to the current time.
A FILE argument that does not exist is created empty, unless -c or -h
is supplied.
A FILE argument string of - is handled specially and causes touch to
change the times of the file associated with standard output.
Mandatory arguments to long options are mandatory for short options too.
-a change only the access time
-c, --no-create do not create any files
-d, --date=STRING parse STRING and use it instead of current time
-f (ignored)
-h, --no-dereference affect each symbolic link instead of any referenced
file (useful only on systems that can change the
timestamps of a symlink)
-m change only the modification time
-r, --reference=FILE use this file's times instead of current time
-t STAMP use <CC]YY]MMDDhhmm[.ss] instead of current time
--time=WORD change the specified time:
WORD is access, atime, or use: equivalent to -a
WORD is modify or mtime: equivalent to -m
--help display this help and exit
--version output version information and exit
Note that the -d and -t options accept different time-date formats.
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report touch translation bugs to <https://translationproject.org/team/>
Full documentation at: <https://www.gnu.org/software/coreutils/touch>
or available locally via: info '(coreutils) touch invocation'
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