Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Instrukcja Użytkownika Pobierz pdf (Strona 43)

command cd ~/my_dir will change my working directory to the subdirectory "my_dir" under

my home directory. Typing just "cd" alone is an equivalent of the command "cd ~".

(dot) Current directory. For example, ./my_program will attempt to execute the file

"my_program" located in your current working directory.

(two dots) Directory parent to the current one. For example, the command cd .. will change my

current working directory one one level up.

7.2 Common Linux commands--system info

pwd

Print working directory, i.e., display the name of my current directory on the screen.

hostname

Print the name of the local host (the machine on which you are working). Use netconf (as root)

to change the name of the machine.

whoami

Print my login name.

id username

Print user id (uid) and his/her group id (gid), effective id (if different than the real id) and the

supplementary groups.

date

Print or change the operating system date and time. E.g., I could change the date and time to

2000-12-31 23:57 using this command:

date 123123572000

To set the hardware (BIOS) clock from the system (Linux) clock, use the command (as root)

setclock

time

Determine the amount of time that it takes for a process to complete + other info. Don't confuse

it with the date command. E.g. I can find out how long it takes to display a directory content

using:

time ls

who

Determine the users logged on the machine.

rwho -a

(=remote who) Determine all users logged on your network. The rwho service must be enabled

for this command to run. If it isn't, run setup as root to enable "rwho".

finger user_name

System info about a user. Try:

finger root

last

Show listing of users last logged-in on your system.

history | more

Show the last (1000 or so) commands executed from the command line on the current account.

The "| more" causes the display to stop after each screenful.

uptime

Show the amount of time since the last reboot.

(=print status) List the processes currently run by the current user.

ps axu | more

List all the processes currently running, even those without the controlling terminal, together

with the name of the user that owns each process.

top

Keep listing the currently running processes, sorted by cpu usage (top users first). In KDE, you

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 59 60

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