How do you get the last word from a line in UNIX file?

How do you find the last word in a file in Unix?

How do you display the last 5 lines of a file in Unix? To look at the last few lines of a file, use the tail command. tail works the same way as head: type tail and the filename to see the last 10 lines of that file, or type tail -number filename to see the last number lines of the file.

How do you print the last word of a line in Unix?

You can try :

  1. sed ‘s/. * //’
  2. awk ‘{print $NF}’

How do I grep last word in a line?

3 Answers

  1. [^,]+ matches one or more characters that are not , at the end of the line ( $ )
  2. -o prints only the matched portion.

How do I get the last word in a string in bash?

Combining $ with NF outputs the last field in the string, no matter how many fields your string contains. “print NF” print number of words, $NF is the last word.

INTERESTING:  What were the first operating system used for?

What is NF in awk command?

NF is a predefined variable whose value is the number of fields in the current record. awk automatically updates the value of NF each time it reads a record. No matter how many fields there are, the last field in a record can be represented by $NF .

How do I print last line of awk?

How it works:

  1. awk ‘{print $NF}’ : prints the last field of every line.
  2. paste -sd, : reads stdin serially ( -s , one file at a time) and writes fields comma-delimited ( -d, )
  3. sed ‘s/,/, /g’ : s ubstitutes “,” with “, ” g lobally (for all instances)

What is grep in shell script?

Grep is an acronym that stands for Global Regular Expression Print. Grep is a Linux / Unix command-line tool used to search for a string of characters in a specified file. The text search pattern is called a regular expression. When it finds a match, it prints the line with the result.

What does cut command do in Linux?

The cut command is a command-line utility for cutting sections from each line of a file. It writes the result to the standard output. It’s worth noting that it does not modify the file, but only works on a copy of the content.

What does awk do in bash?

AWK is a programming language that is designed for processing text-based data, either in files or data streams, or using shell pipes. In other words you can combine awk with shell scripts or directly use at a shell prompt. This pages shows how to use awk in your bash shell scripts.

INTERESTING:  How much money does a system administrator make?

How do I remove the last character of a string in bash?

To remove the last n characters of a string, we can use the parameter expansion syntax ${str::-n} in the Bash shell. -n is the number of characters we need to remove from the end of a string.

How do I write an if statement in bash?

The if elif else statement in bash scripts allows creating conditional cases and responses to specific code results.

Bash if Statement Syntax.

Syntax What it is When to use
if [[ <commands> ]] Bash extension, an advanced version of single square brackets. String matching a wildcard pattern.

How do I split a string in bash?

In bash, a string can also be divided without using $IFS variable. The ‘readarray’ command with -d option is used to split the string data. The -d option is applied to define the separator character in the command like $IFS. Moreover, the bash loop is used to print the string in split form.

How do I specify a delimiter in awk?

awk Built-in Variables FS – Field Separator

The variable FS is used to set the input field separator. In awk , space and tab act as default field separators. The corresponding field value can be accessed through $1 , $2 , $3 … and so on. -F – command-line option for setting input field separator.