I would like to know how to take information from a filename and place it into the text of the same file. Let's say I have a file called height_2_width_1.txt containing data that is related to a height of 2 and a width of 1, and the text originally looks like this:
Quote:
3 4
2 5
5 2
7 5
where these two columns are two other variables (depth and brightness, or whatever). Basically, I would like to add two columns to this file, based on the height and width of the first file, such that the end result would look like this:
Quote:
2 1 3 4
2 1 2 5
2 1 5 2
2 1 7 5
So, if I did this, I would have the height 2 and width 1 information put in columns next to the other data related to these particular heights and weights. So a case with a depth of 3 and brightness of 4 would have the height of 2 and width of 1 prepended to it.
And then I have multiple files named height_X_width_Y.txt, such that I have an array for height and width (let's say 1,2,3,4 for each X and Y variable, so I have the following files: height_1_width_1.txt, height_1_width_2.txt, etc). I would like to create a perl script that does the same thing for all of the files. I'm just not sure what the best way would be to do this would be. I hope this made sense.
This is my attempt thus far, but I haven't been able to get it to work:
Instead of `seq ` $max_i` you could use {1..3} (if you are using the bash shell). The only downside is that you have to use the actual value as the max value and not a variable.
Alternatively, you could try to see if you have jot installed - it should be the Mac OS equivalent for seq.
Entry level scripter. Any help appreciated.
for file in *; do rename '4321_' '' $file ; done
Doesn't work for files with spaces in between
FOr eg
4321_1004.dat is renamed to 1004.dat but
4321_1004 2008.dat stays the same (1 Reply)
Hello Mates
I am trying to write a script, which appends and prepends the text in a file.
I tried testing with a small file and it worked fine.
but for the large file, the script is wiping the entire file and adds only the word to be appended in the file.
mv $file_name $file_name.bak
sed... (6 Replies)
I have a number of dat-files, such as abc.dat, def.dat etc, as follows:
2011-07-01 100.0
2011-07-02 101.0
2011-07-03 101.7
I want to prepend the file with the base file name; so for abc.dat it would result in the following:
abc 2011-07-01 100.0
abc 2011-07-02 101.0
abc 2011-07-03 ... (5 Replies)
Hi All
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Hi all,
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LINE 2 xxxx CALL xxxx
LINE 3 xxxx PERFORM UNTIL
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