How do I print a 2nd column in Unix?
We can also print multiple columns and insert our custom string in between columns. For example, to print the permission and filename of each file in the current directory, use the following set of commands: $ ls -l | awk ‘{ print $1 ” : ” $8 }’ -rw-r–r– : delimited_data.
How do I print 2nd and 3rd column in Unix?
7 Answers. then you can use cut -d’ ‘ -f2- to print, from a space-separated values file, the contents from the second column to the last one. The part NF>=3 is to safely validate you are printing the last 3 fields on lines that is guaranteed to have at least 3 fields.
How do I print a column using SED?
Just put both column references next to each other.
- cat logfile | sed ‘s/|/ /’ | awk ‘{print $1, $8}’
- sed ‘s/|/ /’ logfile | awk ‘{print $1, $8}’
- awk -F ‘|’ ‘{print $1, $8}’ logfile.
- awk -F ‘|’ ‘{print $1, $NF}’ logfile.
How do you cut the second field in Unix?
The cut command in UNIX is a command for cutting out the sections from each line of files and writing the result to standard output. It can be used to cut parts of a line by byte position, character and field. Basically the cut command slices a line and extracts the text.
How do I grep to the second column?
3 Answers
- The -F, parameter specifies the delimiter, which is set to a comma for your data.
- $2 refers to the second column, which is what you want to match on.
- “ST” is the value you want to match.
What is NR in awk command?
NR is a AWK built-in variable and it denotes number of records being processed. Usage : NR can be used in action block represents number of line being processed and if it is used in END it can print number of lines totally processed. Example : Using NR to print line number in a file using AWK.
How do you sum in awk?
How to Sum Values in Awk
- BEGIN{FS=”t”; sum=0} The BEGIN block is only executed once at the beginning of the program. …
- {sum+=$11} Here we increment the sum variable by the value in field 11 for each line.
- END{print sum} The END block is only executed once at the end of the program.
How do I print awk space?
To place the space between the arguments, just add ” “ , e.g. awk {‘print $5″ “$1’} .
How do I print multiple columns in awk?
Example 4: Print a range of columns from a file with formatting. The following `awk` command will print the first three columns of marks. txt using printf and output field separator (OFS).
What is awk script?
Awk is a scripting language used for manipulating data and generating reports. The awk command programming language requires no compiling and allows the user to use variables, numeric functions, string functions, and logical operators.
Does grep support regex?
Grep Regular Expression
A regular expression or regex is a pattern that matches a set of strings. … GNU grep supports three regular expression syntaxes, Basic, Extended, and Perl-compatible. In its simplest form, when no regular expression type is given, grep interpret search patterns as basic regular expressions.