Pverha10: Created page with "== sed == Replace all enters with spaces with sed.

 sed ':a;N;$!ba;s/\n/ /g'

Replace all uppercase letters with lowercase with sed.

 sed -e 's/\(.*\)/\L\1/'

The same with tr

 tr '[:upper:]' '[:lower:]'

Get only the dashed mac addresses from a file

 grep -o '..-..-..-..-..-..' file

== Powershell == One liner powershell command to uninstall the application 'Linphone'.

 C:\windows\system32\WindowsPowerShell\v1.0..."

2025-05-17T07:44:37Z

Created page with "== sed == Replace all enters with spaces with sed. <pre> sed ':a;N;$!ba;s/\n/ /g' </pre> <br> Replace all uppercase letters with lowercase with sed. <pre> sed -e 's/$.*$/\L\1/' </pre> The same with tr <pre> tr '[:upper:]' '[:lower:]' </pre> Get only the dashed mac addresses from a file <pre> grep -o '..-..-..-..-..-..' file </pre> == Powershell == One liner powershell command to uninstall the application 'Linphone'. <pre> C:\windows\system32\WindowsPowerShell\v1.0..."

New page

== sed ==

Replace all enters with spaces with sed.
<pre>
sed ':a;N;$!ba;s/\n/ /g'
</pre>
<br>
Replace all uppercase letters with lowercase with sed.
<pre>
sed -e 's/$.*$/\L\1/'
</pre>

The same with tr
<pre>
tr '[:upper:]' '[:lower:]'
</pre>

Get only the dashed mac addresses from a file
<pre>
grep -o '..-..-..-..-..-..' file
</pre>

== Powershell ==

One liner powershell command to uninstall the application 'Linphone'.
<pre>
C:\windows\system32\WindowsPowerShell\v1.0\powershell.exe -command "& {$app = Get-WmiObject -Class Win32_Product -Filter \"Name = 'Linphone'\"; $app.Uninstall() }"
</pre>

Actually a two liner, but this is to put your computer to sleep after 60 seconds from the commandline. Note: hibernate should be turned off for this.
<pre>
timeout 60
rundll32.exe powrprof.dll,SetSuspendState 0,1,0
</pre>

Remove all files in the current directory older than 30 days.
<pre>
forfiles /D -30 /C "cmd /C attrib -s @file & echo @file & del @file"
</pre>

Clear all Windows Event Viewer logs.
<pre>
wevtutil el | Foreach-Object {wevtutil cl “$_”}
</pre>

One liners - Revision history