Which command in Linux with examples?

Which command in Linux with examples?

Linux Command List

Command Description
ls – al Lists files and directories with detailed information like permissions, size, owner, etc.
cat > filename Creates a new file
cat filename Displays the file content
cat file1 file2 > file3 Joins two files (file1, file2) and stores the output in a new file (file3)

How do you cut on the keyboard?

Keyboard shortcuts

  1. Copy: Ctrl+C.
  2. Cut: Ctrl+X.
  3. Paste: Ctrl+V.

How do you trim in Unix?

Example-2: Trim string data using `sed` command Use sed ‘s/^ *//g’, to remove the leading white spaces. There is another way to remove whitespaces using `sed` command. The following commands removed the spaces from the variable, $Var by using `sed` command and [[:space:]].

How do you cut and paste on Linux?

Ctrl+U: Cut the part of the line before the cursor, and add it to the clipboard buffer. If the cursor is at the end of the line, it will cut and copy the entire line. Ctrl+Y: Paste the last text that was cut and copied.

How do you trim in UNIX?

How do I trim a word in bash?

${var// /} removes all space characters. There’s no way to trim just leading and trailing whitespace with only this construct. Bash “patterns” are regular expressions, only with a different syntax than “POSIX (extended) regular expressions”.

How do I cut a word in bash?

In Linux try Ctrl+k to delete from where the cursor is to the end of the word. There are few other shortcuts listed below(working in Linux): Ctrl+e -> Takes cursor at the end of the word.

What are some examples of Linux commands?

Everyday Basic Linux Commands with Examples 1. uname: This command is very useful in verifying server name. 2. df : This is a system information command which is used to show disk usage. 3. date: This is a very common UNIX command which is used to see date of the system. 4. uptime: This command is used to show the current uptime of the machine.

How do I copy a file to another directory in Linux?

To copy files and directories use the cp command under a Linux, UNIX-like, and BSD like operating systems. cp is the command entered in a Unix and Linux shell to copy a file from one place to another, possibly on a different filesystem. The original file remains unchanged, and the new file may have the same or a different name.

How do I copy a file in Unix?

After you’re comfortable with moving around the hierarchy of your hard drive in UNIX, it’s a cinch to copy, move, and rename files and folders. To copy files from the command line, use the cp command. Because using the cp command will copy a file from one place to another, it requires two operands: first the source and then the destination.