Remove blank lines with grep


Remove blank lines ( new line ) with grep
echo -e "a\n\nb" | grep -v '^ *$'

or

grep -v '^[\s\t]*$' file.txt  > new_file.txt

-
Marcadores: , , ,

NGINX - To allow a specific User-Agent from one IP address only

Step 1: Define the Map BlocksAdd this configuration inside the http {} block of your /etc/nginx/nginx.conf file. This logic evaluates the in...

Mais vistos

  • Finding Stale User and Computer Accounts
    Find Users Who Have Never Logged On Use the following PowerShell Command; Get-ADUser -Filter { LastLogonDate -notlike "*" -and En...
  • How to Configure WPAD through DNS
    First you have to configure a wpad site in your IIS Open the proxypac.pac file you have previously created and save as wpad.dat. Copy wpa...
  • JKS and Openssl commands
    Java Keytool Command These commands allow you to generate a new Java Keytool keystore file, create a CSR, and import certificates. A...