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file_manipulation:warp:4ff5b
This command performs the following steps:
-
cat ${file_name}
:cat
is a command used to display the contents of a file.${file_name}
is a placeholder that represents the name of the file you want to display. So, this part of the command reads the contents of the specified file and outputs them. -
| awk '{ print length, $0 }'
: The output from the previous step is piped|
to theawk
command.awk
is a versatile text processing tool. In this command, it is used to print the length of each line along with the line itself. Here,length
will print the length, and$0
represents the entire line. -
| sort -n -s
: The output fromawk
is again piped|
to thesort
command.sort
is used to sort the input lines. Here,-n
option is used to sort numerically, and-s
to maintain the original order when the values to be sorted are the same. So, this step sorts the input lines based on their length. -
| cut -d" " -f2-
: Finally, the output fromsort
is piped|
to thecut
command.cut
is used to extract specific columns or fields from lines of input. Here,-d" "
specifies that the delimiter is a space, and-f2-
means to print fields starting from the second field to the end. So, this step extracts and outputs the original lines, removing the length that was printed byawk
.
In summary, this command reads the contents of a file, prints the length and the line itself using awk
, sorts the lines based on their length using sort
, and then extracts and outputs the original lines without the length using cut
.