Read each line of a file and write it out witha line number.

 
%  number_lines --help 
Help Information for:  number_lines
Usage: number_lines file1  
arg1 - Name of file to be numbered 
I will show: /home/sco/sco/codes/bash/HELP_FILES/number_lines.help
Enter any key to roceed with the view of help:

number_lines:
  Read each line in the input file (arg1) and write it out preceded 
  by a line number. The lines are written to standard out, but I 
  often redirect the output to a file and then, within a script lie 
  acm_getim, I display the numbered file with the unix more utility. 

EXAMPLES: 

%  number_lines test.1 
1 Hi Steve,
2 I think that your suggestion of using dwfs8 to derive IHMP/acam
3 parameters seems like a very good test to run now that dwfs8-owfs
4 calibration work is largely complete.
5 
6 ---------------
7 TEST 0:

%  number_lines list.1 > a.num 
%  cat a.num 
1 /home/sco/HET_work/lrs2_points/20161221/acm/20161221T014915.7_acm_sci.fits
2 /home/sco/HET_work/lrs2_points/20161221/acm/20161221T014922.3_acm_sci.fits
3 /home/sco/HET_work/lrs2_points/20161221/acm/20161221T015635.4_acm_sci.fits
4 /home/sco/HET_work/lrs2_points/20161221/acm/20161221T015642.1_acm_sci.fits