Linux common tasks

curl-post-file.sh

#!/bin/bash
# posts a file named body.json to url
curl -H "Content-Type: application/json" --data-binary @body.json http://localhost:8080/ui/webapp/conf

dates-manipulation.sh

#!/bin/sh
USER_DATE=JUN-08-2011

# first day of the month
FIRST_DAY_OF_MONTH=$(date -d "$USER_DATE" +%b-01-%Y)
PREVIOUS_DAY=$(date -d "$USER_DATE -1 days" +%b-%d-%Y)

# last day of the month
FIRST_DAY_NEXT_MONTH=$(date -d "$USER_DATE +1 month" +%b-01-%Y)
LAST_DAY_OF_MONTH=$(date -d "$FIRST_DAY_NEXT_MONTH -1 day" +%b-%d-%Y)

echo "User date: $USER_DATE"
echo "1. First day of the month: $FIRST_DAY_OF_MONTH"
echo "2. Previous day: $PREVIOUS_DAY"
echo "3. Last day of the month: $LAST_DAY_OF_MONTH"

multiline-output.sh

#!/bin/bash
kernel="2.6.39";
distro="xyz";

cat > /etc/myconfig.conf << EOL
${kernel}

${distro}

EOL