≡ Menu

date command

Unix / Linux: Check New Files In File System /var/www/uploads/

Recently, I switched from MS-Windows based web-server to CentOS Linux based Apache web-server. All user uploaded files are stored in /var/www/uploads/ directory. Is there command that can give me a list of files that have been added to the filesystem at /var/www/uploads/ in last 7 days on Linux/Unix-like oses?
[click to continue…]

Linux / Unix Shell Scripting: Create Filename By Day Of The Week

I need to create a log file using the following format:


How do I create log filename with day of the week in it under Linux or Unix operating systems?
[click to continue…]

Linux / Unix: Sed Substitute Multiple Patterns [ Find & Replace ]

I'm using the date +'%D_%T' to store Unix system date and time in a shell variable called $_now:

_now="$(date +'%D_%T')"
echo $_now


I'd like to replace / and : with _. I'm aware of the following sed command:

sed 's/\//_/g
> s/:/_/g' < <<"$_now"


How do I specify two pattern within the same sed command to replace | and : with _ so that I can get output as 01_20_12_16_10_42?
[click to continue…]

HowTo: UNIX Set Date and Time Command

I recently noticed that one of my UNIX servers was about 4 hours behind the correct time. I wanted to correct the date and time manually. How do I set date and/or time under UNIX operating systems using command line options?
[click to continue…]

UNIX / Linux: Increment The Date

I want to increment the date under UNIX or Linux operating system while writing shell scripts. For example Apr/27/2011 should be incremented as Apr/28/2011 and so on. How do I increment a date in UNIX or Linux shell?
[click to continue…]

HowTo: Get / Print Current Date in Unix / Linux Shell Script

How do I get the current date in Unix or Linux shell scripting and store it into a shell variable? How do I print the current date using Unix shell script?
[click to continue…]

Linux: Bash Get Time

How do I get the system time in BASH? How can I get the Linux system using bash shell?
[click to continue…]

Append Current Date To Filename in Bash Shell

How do I append current date (mm_dd_yyyy format) to a filename (e.g., backup_mm_dd_yyyy.sql) under UNIX like operating systems?
[click to continue…]

Linux Date Command: Convert Named Stats Dump Date

The rndc stats commands created /var/named/chroot/var/named/data/named_stats.txt file under RHEL 5.x or CentOS 5.x BIND 9 server. However, date is not is correct format. The date is in the following format:
grep 'Dump' /var/named/chroot/var/named/data/named_stats.txt

+++ Statistics Dump +++ (1263408025)
--- Statistics Dump --- (1263408025)
+++ Statistics Dump +++ (1263408071)
--- Statistics Dump --- (1263408071)
+++ Statistics Dump +++ (1268304218)
--- Statistics Dump --- (1268304218)
+++ Statistics Dump +++ (1268304248)
--- Statistics Dump --- (1268304248)

How do I convert date (e.g., 1263408025) in a human readable format?
[click to continue…]

Bash: Display Current Date

How do I display the current date under Bash UNIX / Linux / OS X shell?
[click to continue…]