Linux commands :
1.add user in linux
useradd user_name
2.change password
passwd user_name
3.removing user/group
userdel/groupdel user_name/group_name
4.show all process
ps
5. Delete running process
kill p_id ( -9 for force quit )
6.Show user details
id user_name
7.How to find particular word in file
grep "find_String" file_name
egrup -r "s1|s2" file_name
8.show open ports in linux
netstat --listen OR netstat
9.show how many file are open
lsof
10.memory status
free
1.add user in linux
useradd user_name
2.change password
passwd user_name
3.removing user/group
userdel/groupdel user_name/group_name
4.show all process
ps
5. Delete running process
kill p_id ( -9 for force quit )
6.Show user details
id user_name
7.How to find particular word in file
grep "find_String" file_name
egrup -r "s1|s2" file_name
8.show open ports in linux
netstat --listen OR netstat
9.show how many file are open
lsof
10.memory status
free
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