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Energy on CentOS 7 and login to the system
su
Utilization
- To change an different person account
Syntax
Choices
- su – user-name (to login to person’s house listing)
date
Utilization
- To show and set the date and time
Syntax
Choices
To set the date and time
- date -s “MM/DD/YYYY hh:mm:ss”
- date -s “DD month YYYY hh:mm:ss”
- date -s “YYYY-MM-DD hh:mm:ss”
- date -s “YYYYMMDD hh:mm:ss”
Format Specifiers
- date +%T or +%X (Time)
- date +%a or +%A (Day)
- date +%D or +%F or +%x (Date)
- date +%b or +%B or +%m (Month)
- date +%G (Yr)
Ctrl +z or & (Background course of)
Utilization
- To set a job or course of in background
Syntax
- job or course of &
- running_process (Press Ctrl and z to ship it to background)
jobs, bg
Utilization
- To view the all background operating jobs
- bg present the whole jobs
- jobs reveals the roles in sequence
Syntax
fg
Utilization
- To convey a background job to foreground
Syntax
redirectors
Utilization
- Used to redirect knowledge or contents to given file or new file
Syntax
- command > file-name (To redirect command output to a brand new file or overwrite current file)
- command >> file-name (To redirect the output of command and append into current file)
Choices
- > (Create a brand new file or over write contents if file already exists)
- >> (Append contents in an current file)
man and information
Utilization
- To view guide or assist of linux instructions
Syntax
- man command
- information command
(Press “q” key to exit guide)
kind
Utilization
- To kind contents so as
Syntax
Choices
- kind -r file-name (To kind in reverse)
- kind -k5 file-name (To kind column 5)
- kind -u file-name (To kind and take away duplicates)
- kind file1-name file2-name (To kind and merge output of two recordsdata)
- kind -u file1-name file2-name (To kind, take away duplicate and merge output of two recordsdata)
poweroff and halt
Utilization
Synatx
reboot
Utilization
Syntax
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