Step1:
List crontab jobs
crontab -l
Step2:
Open and edit crontab
crontab -e
Step3:
copy and past the following comment and replace the exact path.
Example to run every 1 min:
*/1 * * * * /home/user/fileToStart.sh >> /home/user/logfile.log 2>&1
Example to run on 4:01am on January:
01 04 * * * /home/user/fileToStart.sh >> /home/user/logfile.log 2>&1
Layout example:
minute (0-59), hour (0-23, 0 = midnight), day (1-31), month (1-12), weekday (0-6, 0 = Sunday)
01 04 1 1 1 /home/user/fileToStart.sh >> /home/user/logfile.log 2>&1
Ever got this error when running R script with tm package??
Add the following to /etc/apt/sources.list
deb http://cran.rstudio.com/bin/linux/ubuntu precise/
Then execute these commands
sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys E084DAB9
sudo add-apt-repository ppa:marutter/rdev
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install r-base
When using gradle build, we would have faced this error
JAVA_HOME is set to an invalid directory: /usr/lib/jvm/default-java though we have already set the JAVA_HOME correctly
The reason might be gradle itself tries to export java home once again
Just open /usr/bin/gradle file and find the line
export JAVA_HOME = /usr/lib/jvm/default-java and comment it out
Now it should work fine
Ever faced a situation to cleanup the history in git where you do not need to retain very older commits in history that you never will rollback or do any operation??
I faced this where i need only recent 700 commits in my history.
Here is the work around i did.
Let branch1 be the one which has some 5k+ commits committed years ago
Now i need branch2 with just recent 700 commits in the history, that is the 700th commit from present to past should be the initial one of the repo
I used the fast-export and import feature of git along with the linux sed command combined together for this
git fast-export branch1~700..branch1 | sed “s|refs/heads/branch1|refs/heads/branch2|” | git fast-import
Now you will have your desired branch2 in your local repo which you can push to github
Insert Regular Expression dynamically to replace string in javascript.
var regex = new RegExp('nornaml_'+(dynamicValue), 'g');
replaceString.replace(regex, "Replace Value");
HTML Content:
<input type="button" value="Paste HTML" onclick="document.getElementById('contDiv').focus(); pasteHtmlAtCaret('<b>INSERTED</b>'); ">
<div id="contDiv" contenteditable="true">
Place to Past Content
</div>
Javascript method to print the content in cursor position:
function pasteHtmlAtCaret(html) {
var sel, range;
if (window.getSelection) {
// IE9 and non-IE
sel = window.getSelection();
if (sel.getRangeAt && sel.rangeCount) {
range = sel.getRangeAt(0);
range.deleteContents();
// Range.createContextualFragment() would be useful here but is
// non-standard and not supported in all browsers (IE9, for one)
var el = document.createElement("div");
el.innerHTML = html;
var frag = document.createDocumentFragment(), node, lastNode;
while ( (node = el.firstChild) ) {
lastNode = frag.appendChild(node);
}
range.insertNode(frag);
// Preserve the selection
if (lastNode) {
range = range.cloneRange();
range.setStartAfter(lastNode);
range.collapse(true);
sel.removeAllRanges();
sel.addRange(range);
}
}
} else if (document.selection && document.selection.type != "Control") {
// IE < 9
document.selection.createRange().pasteHTML(html);
}
}
Create element and add that in to table row using javascript.
Create Element Syntax:
document.createElement(nodename)
Create Element Example:
var txtNode=document.createTextNode(“Hello World”);
var head1=document.createElement(“H1”);
var para=document.createElement(“p”);
var text=document.createElement(‘input’);
var textarea=document.createElement(“textarea”);
var label=document.createElement(‘label’);
Example HTML table Clone:
<body>
<table id="exampleDataTable" cellpadding="0" cellspacing="0" width="100%" border="0"></table>
<br/>
<input type="button" id="" onclick="getData('exampleDataTable')" value="submit" />
</body>
Java script methods:
<script type="text/javascript">
//initially create new table
addRow('exampleDataTable');
//delete table row delete button
function tableDeleteRow(tabObj) {
var rowsIndex=tabObj.parentElement.parentElement.rowIndex;
var table = document.getElementById('exampleDataTable');
try {
if(rowsIndex!=0){
table.deleteRow(rowsIndex);
}
}catch(e) {
alert(e);
}
}
//add table row using add button
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement("select");
cell1.style.padding="3px";
element1.style.width = "200px";
element1.style.marginBottom = "0px";
element1.id="option_example";
var element1_relation =["Option1","Option2","Option3"];
for (var i=0;i<element1_relation.length;i++){
var option;
option = document.createElement("option");
option.setAttribute("value", element1_relation[i]);
option.innerHTML = element1_relation[i];
element1.appendChild(option);
}
cell1.appendChild(element1);
var cell2 = row.insertCell(1);
var element2 = document.createElement('input');
cell2.style.padding="3px";
element2.style.width = "200px";
element2.style.marginBottom = "0px";
element2.id="input_example";
cell2.appendChild(element2);
var cell3 = row.insertCell(2);
var element3 = document.createElement("textarea");
cell3.style.padding="3px";
element3.style.width = "200px";
element3.style.marginBottom = "0px";
element3.id="textarea_example";
cell3.appendChild(element3);
var cell4 = row.insertCell(3);
var element4 = document.createElement("BUTTON");
cell4.style.padding="3px";
element4.appendChild(document.createTextNode("Add"));
element4.setAttribute("onClick", "addRow('exampleDataTable')");
cell4.appendChild(element4);
var cell5 = row.insertCell(4);
var element5 = document.createElement("BUTTON");
cell5.style.padding="3px";
element5.appendChild(document.createTextNode("Delete"));
element5.setAttribute("onClick", "tableDeleteRow(this)");
cell5.appendChild(element5);
}
//get all the row data
function getData(tableID){
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var jsonArray = new Array();
for(var index=0; index < rowCount; index++) {
var mapObj = {};
var row = table.rows[index];
var name1 = row.cells[0].childNodes[0];
var name2 = row.cells[1].childNodes[0];
var name3 = row.cells[2].childNodes[0];
mapObj['name1'] = name1.value;
mapObj['name2'] = name2.value;
mapObj['name3'] = name3.value;
}
}catch(e) {
alert(e);
}
}
</script>
 | ZacharyswanI on Login without a password is fo… |
 | gokul on Installing IP Messenger in… |
 | Usman Hi Tech on Using javascript Attribute to… |
 | Swargam on Installing IP Messenger in… |
 | Gulab Singhj on Automatic Starting Tomcat on… |
Developer's Den 