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--- useful:linux-commands [2022/08/25 15:46] – admin
+++ useful:linux-commands [2023/04/13 15:46] – admin
@@ Line 2: / Line 2: @@
 ====== Linux Commands ======
+===== Installing a GPG key =====
+Example:
+     wget -O- https://download.webmin.com/jcameron-key.asc | sudo gpg --dearmor | sudo tee /usr/share/keyrings/jcameron-key.gpg > /dev/null 2>&1
+Then need to edit the sources.list file to look something like:
+     deb [signed-by=/usr/share/keyrings/jcameron-key.gpg] https://download.webmin.com/download/repository sarge contrib
 ===== Change permissions for whole directory structure =====
@@ Line 17: / Line 27: @@
 ===== Delete all files with given pattern =====
-Adapt as required
+     find . -name '*altauserpoints*' -print0 | xargs -0 -P0 rm
+Adapt as required.
+===== Make a change in every file in a directory  =====
+     sed -i 's/foo/bar/g' *
+To make the change through a whole directory tree:
-     ind . -name '*altauserpoints*' -print0 | xargs -0 -P0 rm
+     find ~/public_html/my_website/pages -type f -exec sed -i 's/2017/2018/g' {} \;