Quick Answer: How do you read the nth line in Unix?

How do I print the nth record in Unix?

5 Sed ADDRESS Format Examples

  1. This will match only Nth line in the input. …
  2. M~N with “p” command prints every Nth line starting from line M. …
  3. M,N with “p” command prints Mth line to Nth line. …
  4. $ with “p” command matches only the last line from the input. …
  5. N,$ with “p” command prints from Nth line to end of file.

How do you find the 10th line in a text file?

Where NUM is the number of the line you want to print; so, for example, sed ’10q;d’ file to print the 10th line of file .

How do I get the 10th line from a text file in Unix?

How do you display the 10th line of a file in Unix?

  1. head -10 bar. txt.
  2. head -20 bar. txt.
  3. sed -n 1,10p /etc/group.
  4. sed -n 1,20p /etc/group.
  5. awk ‘FNR <= 10’ /etc/passwd.
  6. awk ‘FNR <= 20’ /etc/passwd.
  7. perl -ne’1.. 10 and print’ /etc/passwd.
  8. perl -ne’1.. 20 and print’ /etc/passwd.
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How do I print the nth column in Unix?

Printing the nth word or column in a file or line

  1. To print the fifth column, use the following command: $ awk ‘{ print $5 }’ filename.
  2. We can also print multiple columns and insert our custom string in between columns.

How do you display the nth line in Linux?

How do you display a specific line in a file in Unix?

  1. awk : $>awk ‘{if(NR==LINE_NUMBER) print $0}’ file. txt.
  2. sed : $>sed -n LINE_NUMBERp file. txt.
  3. head : $>head -n LINE_NUMBER file. txt | tail -n + LINE_NUMBER Here LINE_NUMBER is, which line number you want to print. Examples: Print a line from single file.

How do you read a specific line from a file in Linux?

Using the head and tail commands, we can easily get the first and last parts of a file.

  1. First, we get line 1 to X using the head command: head -n X input.
  2. Then, we pipe the result from the first step to the tail command to get the last line: head -n X input | tail -1.

How do you count lines in Linux?

How to Count lines in a file in UNIX/Linux

  1. The “wc -l” command when run on this file, outputs the line count along with the filename. $ wc -l file01.txt 5 file01.txt.
  2. To omit the filename from the result, use: $ wc -l < file01.txt 5.
  3. You can always provide the command output to the wc command using pipe. For example:

How do I show the middle line in Linux?

The command “head” is used to view the top lines of a file and command “tail” is used to view lines at the end.

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How do I extract a specific line from a text file in Unix?

To extract a range of lines, say lines 2 to 4, you can execute either of the following:

  1. $ sed -n 2,4p somefile. txt.
  2. $ sed ‘2,4! d’ somefile. txt.

How do I extract the second row of a text file?

Ataul

  1. Ataul. Answered On : May 20th, 2015.
  2. Code. head -2 filename | tail -1. Similarly to get the 2nd last line, the order will be reversed that is. tail -2 filename | head -1.

How do I grep a specific line number in Linux?

The -n ( or –line-number ) option tells grep to show the line number of the lines containing a string that matches a pattern. When this option is used, grep prints the matches to standard output prefixed with the line number.

How do you remove the nth line in UNIX?

How to delete every nth line in a file in Linux?

  1. awk solution : $ awk ‘NR%3’ file AIX Solaris Linux HPUX. …
  2. Perl: $ perl -lne ‘print if $.%3 ;’ file AIX Solaris Linux HPUX. …
  3. sed: $ sed ‘n;n;d;’ file AIX Solaris Linux HPUX. …
  4. Bash Shell script:

How do I display a specific column in Unix?

1) The cut command is used to display selected parts of file content in UNIX. 2) The default delimiter in cut command is “tab”, you can change the delimiter with the option “-d” in the cut command. 3) The cut command in Linux allows you to select the part of the content by bytes, by character, and by field or column.

What is print $1?

If you notice awk ‘print $1’ prints first word of each line. If you use $3, it will print 3rd word of each line.

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How do you get the 3rd element column from each line from a file?

To get third column in tab delimited file, you can simply call it as cut -f3 <file> . Different delimiter can be passed via -d parameter, e.g.: cut -f3 -d: . You can even get multiple columns, or characters at fixed positions on the line.