SHELL

linux use lines from file in command

# Basic syntax:
xargs -a file_to_read -I {} command {}
# Where:
#	- -a tells xargs to reads items from file_to_read instead of stdin.
#	- -I specifies a string that will be replaced by the stdin when found.
#		This is useful for controlling where the read content appears in the
#		xargs command
# Note, it's often useful to use this in conjunction with -n 1 and -P # which
#	causes xargs to run the commands in parallel using # processes

how to display specific lines from a file in linux

Write a bash script to print a particular line from a file:

awk = $ awk '{if(NR==LINE_NUMBER) print $0}' file.txt
sed = $ sed -n LINE_NUMBERp file.txt

show specific lines in file linux

$ cat sample_file.txt | awk 'NR==9'     #[Prints 9th line]