Flash Notes
Strings - Colorize strings matching regular expressions
• How to colorize strings from a file or a stream according to specified regular expressions ?
Solution
Use the hl command.
hl sources files are available on github : git clone http://github.com/mbornet-hl/hl
hl sources files are available on github : git clone http://github.com/mbornet-hl/hl
• How to colorize in green the IP addresses of the /etc/hosts file ?
Solution
hl -e -g '(\<([0-9]{1,3}\.){3}[0-9]{1,3}\>)' < /etc/hosts
Result
... ... 192.168.122.2 vm-debian-6-0-0-amd64 192.168.122.3 vm-debian-6-0-1-amd64 192.168.122.4 vm-debian-6-0-2-1-amd64 192.168.122.5 vm-debian-6-0-3-amd64 192.168.122.6 vm-debian-6-0-4-amd64 192.168.122.7 vm-debian-6-0-5-amd64 192.168.122.8 vm-debian-6-0-6-amd64 ...
• How to colorize the output of the "df" command ?
Solution
Use the configurations of the hl command :
df -h | hl --df
df -h | hl --df
Result
Filesystem Size Used Avail Use% Mounted on rootfs 323M 215M 92M 71% / udev 10M 0 10M 0% /dev tmpfs 1.6G 2.6M 1.6G 1% /run /dev/disk/by-uuid/71a1683e-9bdb-49c9-ae60-ab904753e6cf 323M 215M 92M 71% / tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 9.6G 1.1M 9.6G 1% /run/shm /dev/sdc9 416G 356G 40G 91% /home /dev/sdc8 368M 41M 309M 12% /tmp /dev/sdc5 8.3G 5.8G 2.1G 74% /usr /dev/sdc6 2.8G 1.4G 1.3G 54% /var /dev/sda1 1.8T 1.4T 398G 78% /DATA3 /dev/sdd1 1.8T 1.5T 271G 85% /DATA4 /dev/sdb1 1.8T 1.1T 716G 59% /DATA5 /dev/loop0 4.4G 4.4G 0 100% /mnt/DVD
• How to colorize each color name in its own color ?
Solution
echo 'red green yellow blue magenta cyan white' | hl -r 'red' -g 'green' -y 'yellow' -b 'blue' -m 'magenta' -c 'cyan' -w 'white'
Result
red green yellow blue magenta cyan white