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--- debian_common [2019/04/21 16:17] – [Basic commands 101] Júne Park
+++ debian_common [2019/05/27 09:11] – [Fetch error during update] Júne Park
@@ Line 388: / Line 388: @@
 ----
+===== Upgrade php 7.x =====
+Append additional source for php7.x latest,
+<code bash>
+wget -q https://packages.sury.org/php/apt.gpg -O- | sudo apt-key add -
+echo "deb https://packages.sury.org/php/ stretch main" | sudo tee /etc/apt/sources.list.d/php.list
+</code>
+<code bash>
+sudo apt-get update
+</code>
+<code text>
+Reading package lists... Done
+E: The method driver /usr/lib/apt/methods/https could not be found.
+N: Is the package apt-transport-https installed?
+E: Failed to fetch https://packages.sury.org/php/dists/stretch/InRelease
+E: Some index files failed to download. They have been ignored, or old ones used instead.
+</code>
+When it comes to this errors, install additional packages for update,
+<code bash>
+sudo apt-get install ca-certificates apt-transport-https
+<code>
+Install php with latest version
+<code bash>
+sudo apt-get install php7.2 php7.2-cli php7.2-common php7.2-opcache php7.2-curl php7.2-mbstring php7.2-mysql php7.2-zip php7.2-xml
+</code>
+To verify the installation is completed run the following command:
+<code bash>
+php -v
+</code>
+----
 ==== Basic commands 101 ====
@@ Line 487: / Line 527: @@
 Both the standard output and standard error streams will be copied to the file while still being visible in the terminal. If the file already exists, the new data will get appended to the end of the file.
+----
+=== Find string(s) in files ===
+<code bash>
+find /path/to/files/ -type f | xargs grep -n 'string_to_search'
+</code>
 ----