Basic Commands in Linux - WATCH

watch
   watch command is used to see the output of particular command frequently and displays the output.
Consider you want to see whether a file in a particular folder was Processed or not. To check this we frequently use ls command or find command to check the file. Instead, we can use watch command for these scenarios

watch ls -l - this will run the ls -l command for every 2 seconds and display the output like below.







if you want to change the time interval we can use watch -n (sec) command.

for example: watch -n 3 ls -l this will run the command for every 3 sec

to go back to terminal use ctrl+c.

Comments

Post a Comment

Popular posts from this blog

Basic Commands in Linux - To display list of files and folders in a directory or folder

ls    ls is used to display the list of files in current folder. here you can see only few option . To know more options please comment below. ls - list of files in current folder. ls  ls -a - this will list all the files including hidden one. hidden files will start with . (.filename.txt) . ls -a ls -l - this will display size,access,owner,date modified details of files or folders ls -lrt
Read more

Basic Commands in Linux - To display Date And Time

Date     Date is used to display the current date and time in your terminal. Date command provides lots option to display date and time. Here you can find the small range, Please comment if need to know more option. date - this will display the date and time with coordinated universal time. date date +%A - this will display current weekday full name. date +%A date +%a - this will display the current weekday short name. date +%a date +%B - this will display the current month full name. date +%B date +%b - this will display the current month short name. date +%b date +%C - this will display the current Century. date +%C  date +%c - this will display local date and time. date +%c date +%D - this will display simply date with month and year. date +%D date +%d - this will display just current date. date +%d
Read more

Basic Commands in Linux - To create a file

Touch     Touch is used to create an empty file, Touch can also be used to change the date and time of the file. touch [filename]  - This will create an empty file. touch bill touch -t mmddhhmm [filename] - this command will change the date and time of the file. touch -t 10101213 bill
Read more