Daftar Perintah Linux

1. Melihat Port yang terbuka (Open/Listening)
   
   

   root@ns:/home/it# netstat -tulpn
   Active Internet connections (only servers)
   Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
   tcp        0      0 0.0.0.0:389             0.0.0.0:*               LISTEN      796/slapd       
   tcp        0      0 127.0.0.1:9000          0.0.0.0:*               LISTEN      843/php-fpm.conf)
   tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      1026/apache2    
   tcp        0      0 172.16.16.106:53        0.0.0.0:*               LISTEN      745/named       
   tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      745/named       
   tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      585/sshd        
   tcp        0      0 0.0.0.0:3128            0.0.0.0:*               LISTEN      968/(squid)     
   .
   .
   .
   
   root@ns:/home/it# netstat -tulpn | grep :3128
   tcp        0      0 0.0.0.0:3128            0.0.0.0:*               LISTEN      968/(squid)     
   
   root@ns:/home/it# netstat -tulpn | grep squid
   tcp        0      0 0.0.0.0:3128            0.0.0.0:*               LISTEN      968/(squid)     
   udp        0      0 0.0.0.0:59683           0.0.0.0:*                           968/(squid)     
   

   
   
   
2. Mencari daftar file atau folder tertentu di dalam suatu folder. Misal contoh di bawah ini mencari file dan folder "netbeans" dan "java" di dalam folder root "/" :
   
   

   it916@planning-ho-pc:~$ find / -name netbeans 2> /dev/null
   /home/it916/.cache/netbeans
   /home/it916/.netbeans/8.1/config/Preferences/org/netbeans
   /usr/share/menu/netbeans
   /usr/share/lintian/overrides/netbeans
   /usr/share/doc/netbeans
   /usr/share/maven-repo/org/netbeans
   /usr/share/netbeans
   /usr/share/netbeans/java5/sources/org/netbeans
   /usr/share/netbeans/8.1/bin/netbeans
   /usr/share/netbeans/ide14/docs/org/netbeans
   /usr/bin/netbeans
   
   it916@planning-ho-pc:~$ find / -name java 2> /dev/null
   /etc/ssl/certs/java
   /etc/alternatives/java
   /etc/apparmor.d/abstractions/ubuntu-browsers.d/java
   /var/lib/dpkg/alternatives/java
   /home/it916/.cache/netbeans/8.1/index/s21/java
   /home/it916/.cache/netbeans/8.1/index/s26/java
   /home/it916/.cache/netbeans/8.1/index/s11/java
   /home/it916/.cache/netbeans/8.1/index/s8/java
   /home/it916/.cache/netbeans/8.1/index/s17/java
   /home/it916/.cache/netbeans/8.1/index/s9/java
   /home/it916/.cache/netbeans/8.1/index/s6/java
   /home/it916/.cache/netbeans/8.1/index/s16/java
   /home/it916/.cache/netbeans/8.1/index/s1/java
   /home/it916/.cache/netbeans/8.1/index/s2/java
   /home/it916/.cache/netbeans/8.1/index/s13/java
   /home/it916/.cache/netbeans/8.1/index/s3/java
   /home/it916/.cache/netbeans/8.1/index/s27/java
   /home/it916/.cache/netbeans/8.1/index/s19/java
   /home/it916/.cache/netbeans/8.1/index/s5/java
   /home/it916/.cache/netbeans/8.1/index/s7/java
   /home/it916/.cache/netbeans/8.1/index/s25/java
   /home/it916/.cache/netbeans/8.1/index/s22/java
   /home/it916/.cache/netbeans/8.1/index/s23/java
   /home/it916/.cache/netbeans/8.1/index/s10/java
   /home/it916/.cache/netbeans/8.1/index/s12/java
   /home/it916/.cache/netbeans/8.1/index/s20/java
   /home/it916/.cache/netbeans/8.1/index/s18/java
   /home/it916/.cache/netbeans/8.1/index/s15/java
   /home/it916/.cache/netbeans/8.1/index/s4/java
   /home/it916/.cache/netbeans/8.1/index/s14/java
   /home/it916/.cache/netbeans/8.1/index/s24/java
   /home/it916/.netbeans/8.1/config/Preferences/org/netbeans/modules/java
   /usr/lib/jvm/java-8-openjdk-amd64/bin/java
   /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
   /usr/share/java
   /usr/share/bash-completion/completions/java
   /usr/share/lintian/data/java
   /usr/share/doc/openjdk-8-jre-headless/api/java
   /usr/share/doc/openjdk-8-jre-headless/api/org/omg/stub/java
   /usr/share/doc/openjdk-8-jre-headless/jre/api/plugin/dom/com/sun/java
   /usr/share/doc/openjdk-8-jre-headless/jre/api/accessibility/jaccess/spec/com/sun/java
   /usr/share/maven-repo/net/java
   /usr/share/netbeans/8.1/java
   /usr/bin/java
   



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