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--- wiki2:linux_scripting [2016/12/05 15:13]
alfred
+++ wiki2:linux_scripting [2020/05/09 09:25] (actual)
@@ Línea 35: / Línea 35: @@
 <code>
 set -e
+</code>
+===== Fast notes =====
+=== Check if a directory or file exists ===
+Looking the status code of:
+<code>
+test -d /path
+</code>
+=== Wait to press a key ===
+<code>
+read -n1 -r -p "Press any key to continue..." key;
+</code>
+=== Override a line in a config file ===
+<code>
+sed -i 's/# auth-access = write/auth-access = write/' src/conf/svnserve.conf
+sed -i 's/# password-db = passwd/password-db = passwd/' doc/conf/svnserve.conf
+</code>
+=== Get formatted data ===
+get year-month-day from date
+<code>
+DATE=`date +%Y-%m-%d`
+</code>
+get year-month-day hour:minute:second from date
+<code>
+DATE=`date '+%Y-%m-%d %H:%M:%S'`
+</code>
+<code>
+$ DATE=$(date +%y%m%d)
+$ echo $DATE
+</code>
+===== Examples =====
+Some Django shortcuts:
+<code>
+resetmigrations() {
+  if [ -z "$1" ]
+    then
+      echo "No database supplied"
+      return
+  fi
+  echo "The $1 database is going to be reseted";
+  read -n1 -r -p "Press any key to continue..." key;
+  find . -path "*/migrations/*.py" -not -name "__init__.py" -delete
+  find . -path "*/migrations/*.pyc"  -delete
+  export PGPASSWORD=mysecretpassword;
+  dropdb -h 127.0.0.1 -U postgres $1
+  createdb -T template0 -h 127.0.0.1 -U postgres $1
+  python manage.py makemigrations
+  python manage.py migrate
+}
 </code>

Programming