설치된 Command의 경로, 정보를 얻는 명령들

제목이 좀 이상하긴 하지만,
설치된 Command(예, ls 혹은 openssh-client 등등)의 실행 경로나 정보를 찾는 방법을 공부해 봅니다.

~$ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

현재의 PATH를 표시한다.

~$ which ls /bin/ls

PATH 상에서 처음으로 발견된 파일을 찾는다.

~$ find /usr -name ls /usr/lib/klibc/bin/ls

/usr 디렉토리 하부에 지정된 이름의 파일을 찾는다.

~$ whereis ls ls: /bin/ls /usr/share/man/man1/ls.1.gz

첫음으로 발견된 파일과 man 문서의 경로를 표시한다.

~$ locate ls /bin/false /bin/ls ...

해당 이름에 대해 디렉토리 리스트를 찾아준다.

~$ apropos ls _llseek (2)          - reposition read/write file offset ... ls (1)               - list directory contents ...

해당 키워드에 해당되는 man 설명 부분을 나열한다.

~$ man 1 ls

해당 명령에 대해 Section 1의 내용을 표시한다.

~$ apt-cache search openssh-client openssh-client - secure shell (SSH) client, for secure access to remote machines ssh-askpass-gnome - interactive X program to prompt users for a passphrase for ssh-add

Package Cache 리스트에 해당 명령이나 설명을 찾아준다.

~$ dpkg-query -S openssh-client openssh-client: /usr/share/apport/package-hooks/openssh-client.py openssh-server: /usr/share/doc/openssh-client/examples/sshd_config openssh-client: /usr/share/doc/openssh-client/faq.html openssh-client, openssh-server, ssh: /usr/share/doc/openssh-client openssh-client: /usr/share/doc/openssh-client/README.compromised-keys.gz openssh-client: /usr/share/doc/openssh-client/changelog.gz openssh-client: /usr/share/doc/openssh-client/README openssh-client: /usr/share/doc/openssh-client/OVERVIEW.gz openssh-client: /usr/share/doc/openssh-client/copyright openssh-client: /usr/share/doc/openssh-client/README.tun.gz openssh-client: /usr/share/doc/openssh-client/README.Debian.gz openssh-client: /usr/share/doc/openssh-client/README.dns openssh-client: /usr/share/doc/openssh-client/ChangeLog.gssapi openssh-client: /usr/share/doc/openssh-client/changelog.Debian.gz openssh-client: /usr/share/lintian/overrides/openssh-client openssh-client: /usr/share/doc/openssh-client/NEWS.Debian.gz openssh-server: /usr/share/doc/openssh-client/examples

해당 이름에 대해, 설치된 Package에서 찾고, 그 안에 있는 것들을 표시한다.

~$ dpkg -L openssh-client /. /usr /usr/share /usr/share/lintian /usr/share/lintian/overrides /usr/share/lintian/overrides/openssh-client /usr/share/doc /usr/share/doc/openssh-client /usr/share/doc/openssh-client/ChangeLog.gssapi /usr/share/doc/openssh-client/README /usr/share/doc/openssh-client/README.dns /usr/share/doc/openssh-client/changelog.gz /usr/share/doc/openssh-client/faq.html /usr/share/doc/openssh-client/README.Debian.gz /usr/share/doc/openssh-client/changelog.Debian.gz /usr/share/doc/openssh-client/copyright /usr/share/doc/openssh-client/NEWS.Debian.gz /usr/share/doc/openssh-client/OVERVIEW.gz /usr/share/doc/openssh-client/README.tun.gz /usr/share/doc/openssh-client/README.compromised-keys.gz ... /var /var/run /etc /etc/ssh /etc/ssh/ssh_config /etc/ssh/moduli /usr/share/man/man1/slogin.1.gz /usr/bin/slogin

지정된 이름의 Package가 포함한 파일들을 나열한다.