리눅스 유닉스 명령어 모음.pdf (Linux Command)

리눅스 유닉스 명령어 모음.pdf (Linux Command)


유닉스, 리눅스 명령어 모음입니다. 딱!! 주로 사용하는 것들만 모여있네요.



File Commands


ls – directory listing

ls -al – formatted listing with hidden files


cd dir - change directory to dir

cd – change to home

pwd – show current directory


mkdir dir – create a directory dir


rm file – delete file

rm -r dir – delete directory dir

rm -f file – force remove file

rm -rf dir – force remove directory dir *


cp file1 file2 – copy file1 to file2

cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if itdoesn't exist


mv file1 file2 – rename or move file1 to file2 if file2 is an existing directory, moves file1 into directory file2


리눅스 유닉스 명령어 모음


ln -s file link – create symbolic link link to file


touch file – create or update file


cat > file – places standard input into file


more file – output the contents of file


head file – output the first 10 lines of file


tail file – output the last 10 lines of file

tail -f file – output the contents of file as it grows, starting with the last 10 lines

Process Management


ps – display your currently active processes


top – display all running processes


kill pid – kill process id pid

killall proc – kill all processes named proc *


bg – lists stopped or background jobs; resume a stopped job in the background


fg – brings the most recent job to foreground

fg n – brings job n to the foreground


리눅스 유닉스 명령어 모음


File Permissions


chmod octal file – change the permissions of file to octal, which can be found separately for user, group, and world by adding:


4 – read (r)

2 – write (w)

1 – execute (x)


Examples:

chmod 777 – read, write, execute for all

chmod 755 – rwx for owner, rx for group and world For more options, see man chmod.

SSH

ssh user@host – connect to host as user

ssh -p port user@host – connect to host on port port as user

ssh-copy-id user@host – add your key to host for user to enable a keyed or passwordless login


Searching

grep pattern files – search for pattern in files

grep -r pattern dir – search recursively for pattern in dir


command | grep pattern – search for pattern in the output of command


locate file – find all instances of file


리눅스 명령어 644 chmod


System Info


date – show the current date and time


cal – show this month's calendar


uptime – show current uptime


w – display who is online

whoami – who you are logged in as finger user – display information about user


uname -a – show kernel information


cat /proc/cpuinfo – cpu information

cat /proc/meminfo – memory information


man command – show the manual for command


df – show disk usage

du – show directory space usage


free – show memory and swap usage


whereis app – show possible locations of app

which app – show which app will be run by default

Compression


tar cf file.tar files – create a tar named file.tar containing files

tar xf file.tar – extract the files from file.tar

tar czf file.tar.gz files – create a tar with Gzip compression

tar xzf file.tar.gz – extract a tar using Gzip

tar cjf file.tar.bz2 – create a tar with Bzip2 compression

tar xjf file.tar.bz2 – extract a tar using Bzip2


gzip file – compresses file and renames it to file.gz

gzip -d file.gz – decompresses file.gz back to file


Network


ping host – ping host and output results


whois domain – get whois information for domain


dig domain – get DNS information for domain

dig -x host – reverse lookup host


wget file – download file

wget -c file – continue a stopped download


Installation


Install from source:


./configure

make

make install


dpkg -i pkg.deb – install a package (Debian)


rpm -Uvh pkg.rpm – install a package (RPM)


Shortcuts


Ctrl+C – halts the current command

Ctrl+Z – stops the current command, resume with fg in the foreground or bg in the background

Ctrl+D – log out of current session, similar to exit

Ctrl+W – erases one word in the current line

Ctrl+U – erases the whole line

Ctrl+R – type to bring up a recent command


!! - repeats the last command


exit – log out of current session


리눅스 유닉스 명령어 모음.pdf (Linux Command)

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