Article directory
finger
Used to find and display user information
Additional information
fingerCommands are used to find and display user information. It includes users from local and remote hosts. There is no case difference in account names. Executing fingerthe command alone will display the login information of all current users on the local host, including account name, real name, login terminal, idle time, login time, address and phone number.
grammar
finger [选项] [参数]
Options
-l: List the user's account name, real name, user-specific directory, login shell, login time, forwarding address, email status, as well as the contents of plan files and program files;-m: Excludes finding the user’s real name;-s: List the user’s account name, real name, login terminal, idle time, login time, address and phone number;-p: Lists the user's account name, real name, user-specific directory, login shell, login time, forwarding address, and email status, but does not display the user's plan files and program file contents.
fingerIf the operator is provided for unspecified options, the -loutput style will be set by default, otherwise it will be -sstyle. Note that in both formats, if there is insufficient information, some fields may be lost. If no parameters are specified, the output style fingerwill be used for each currently logged in user. The user prints an entry.
parameter
- Username: Specify the user to query information.
Example
Use on your computer finger:
[root@localhost root]# finger
login Name Tty Idle Login time Office Office Phone
root root tty1 2 Dec 18 13
root root pts/0 1 Dec 18 13
root root *pts/1 Dec 18 13
If you want to query the user information on the remote machine, you need to follow the user name with the @host name in 用户名@主机名the format. However, the network host to be queried needs to be fingersupported by a running daemon process.
sleep
Delay the current action for a period of time
Additional information
sleepThe command pauses for the specified time.
grammar
sleep [参数]
parameter
- Time: Specify the length of time to pause. The time length can be followed by
s,m,hord, wheresis seconds,mminutes,hhours,dor days.
Example
Sometimes when writing some monitoring scripts that run in a loop, it is essential to set the time interval. The following is a script showing a Shell progress bar to generate a delay in the script.
#!/bin/bash
b=''
for ((i=0;$i<=100;i++))
do
printf "Progress:[%-100s]%d%%\r" $b $i
sleep 0.1
b=#$b
done
echo
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