Use variables for cut command Post: 302887776

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Assign variables with cut

I need to read a file (a list) and assign the value to a variable (for each line), I'm looping until the end of the file. My problem is, I want to assign 2 separate variables from the list. The process I'm using is: awk '{print $3}' file1 > file2 awk '{print $4}' file1 > file3 cat file2...

2. UNIX for Dummies Questions & Answers

Cut a Variable into sub variables based on a delimiter

Hello All, I am novice on Shell Scripting. Any help on this is highly appreciated. I have a variable $VARIABLE="$some1|$some2|$some3" I need sub variables $SUBVAR1,$SUBVAR2,$SUBVAR3 which must be equal to $some1 , $some2 and $some3 respectively. It works fine with $SUBVAR1 =...

3. Shell Programming and Scripting

assign a command line argument and a unix command to awk variables

Hi , I have a piece of code ...wherein I need to assign the following ... 1) A command line argument to a variable e.g origCount=ARGV 2) A unix command to a variable e.g result=`wc -l testFile.txt` in my awk shell script When I do this : print "origCount" origCount --> I get the...

4. Shell Programming and Scripting

Need help for Cut Command

Hi All, Greetings.. I am having a Line of 1600 characters in which each specifi fields have some values. For example 1-5 Firstname 6-8 Age and so on.. I am using `expr substr $line 100,7` to get values from the line and store in seperate variables.. The file contains 70000 lines. It is taking 3...

5. UNIX for Dummies Questions & Answers

Parse or cut concat variables to individual values

Hello I need to pass some environment parameters to a datastage job and am getting an error when trying to send the complete concatinated variable. I have decided to parse out just the values and send as parameters but am struggling to find the best way to do this (actually I am not very...

6. Shell Programming and Scripting

Cut Command error cut: Bad range

Hi Can anyone what I am doing wrong while using cut command. for f in *.log do logfilename=$f Log "Log file Name: $logfilename" logfile1=`basename $logfilename .log` flength=${#logfile1} Log "file length $flength" from_length=$(($flength - 15)) Log "from...

7. Shell Programming and Scripting

Cut fields from /etc/passwd file into variables?

The script must ask the user to enter the user name and check whether the user exists in /etc/passwd (you must allow the partial usernames also). If the username exists, display the details as: List of users Login Name: User ID: ...

8. UNIX for Dummies Questions & Answers

Cut pid from ps using cut command

hay i am trying to get JUST the PID from the ps command. my command line is: ps -ef | grep "mintty" | cut -d' ' -f2 but i get an empty line. i assume that the delimiter is not just one space character, but can't figure out what should i do in order to do that. i know i can use awk or cut...

9. UNIX for Beginners Questions & Answers

Cut command: can't make it cut fields

I'm a complete beginner in UNIX (and not a computer science student either), just undergoing a tutoring course. Trying to replicate the instructions on my own I directed output of the ls listing command (lists all files of my home directory ) to My_dir.tsv file (see the screenshot) to make use of...

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)