Help Needed Using awk/CUT


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Help Needed Using awk/CUT
# 8  
Old 01-23-2014
Thanks dan it worked thanks for your help
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Help Needed! - Cut characters after a text string and append to end of filename

Hi all.. I have several unique files that contain one thing in common, and that is acct#. For all files in the directory, I want to append the 10 characters following the word "ACCOUNT:" to the end of the filename. for example: I have file 111_123 that contains ACCOUNT:ABC1234567 The file... (5 Replies)
Discussion started by: cinderella1
5 Replies

2. Shell Programming and Scripting

help with cut command needed

I have this file containing 8 veritcal lines and I need to cut the first two lines into a new file and then cut the next two lines into a new file and so on... any help would be much appreciated. I tried the cut -c but that doesnt work and I am not sure what else to try. Thanks. (1 Reply)
Discussion started by: drew211
1 Replies

3. Shell Programming and Scripting

Want to use awk instead of cut

I want to use awk instead of cut command. Following is my code: line="slNumber=US78AJF11643, slName=USJFKAAUSYDAAUL80441032900095, dummy sl found? sqlca.sqlcode=0" sl_WORD=`echo $line| cut -f 1 -d','` sl=`echo $sl_WORD | cut -f 2 -d'='` echo "$sl" Please suggest me about the code. ... (5 Replies)
Discussion started by: rinku
5 Replies

4. Shell Programming and Scripting

HELP! using cut/awk

how would i write a shell script to show the number of lines in which int variable appears in a c++ program. how would i do this using cut or awk methods is it possbile and having a output similar to this x, number of apperances = y, number of apperances = (2 Replies)
Discussion started by: deadleg
2 Replies

5. UNIX for Dummies Questions & Answers

Help please awk or cut

Hi I'm new to unix programming so struggling with something thats probably simple to many of you I have data files of the format : ID, date, value1, value2, blank on each line either value1 or value2 will be zero. I need my output file to contain ID, date, non-zero value The input... (3 Replies)
Discussion started by: thewench
3 Replies

6. Shell Programming and Scripting

Is awk vs cut which one is better

i was trying to work on program to look for users never log on sever.. using awk with awk is working last| awk '{print $1}' |sort -u > /tmp/users1$$ cat /etc/passwd | awk -F: '{print $1}' |sort -u > /tmp/users2$$ comm -13 /tmp/users$$ rm -f /tmp/users$$ with cut it is not working ... (3 Replies)
Discussion started by: macrules
3 Replies

7. Shell Programming and Scripting

awk or cut

select some fields from data file (source.csv) The data in file(source.csv) is like "x1,2",,"y",,"z" How to get the 1st, 2nd and 3rd field from the file. Using awk or cut? Note: "x1,2" is one field. thanks, (16 Replies)
Discussion started by: anypager
16 Replies

8. Shell Programming and Scripting

[grep awk cut] > awk

Hi, I'm very new to scripting. grep $s $filename | awk '{print $2}' | cut -c 1-8 How can I optimize this using a single awk? I tried: awk '/$s/ {print $2}' $filename | cut -c 1-8 However didn't work, I think the awk is not recognizing $s and the verbal is something else. (6 Replies)
Discussion started by: firdousamir
6 Replies

9. UNIX for Dummies Questions & Answers

Cut help needed!!!!!!

cut help needed!!!!! -------------------------------------------------------------------------------- /home/documents/files/scooter17.dat I am trying to cut out everything upto scooter17.dat so that it will only print out the scooter17.dat any ideas? great advices will be greatly... (1 Reply)
Discussion started by: scooter17
1 Replies

10. UNIX for Dummies Questions & Answers

cut help needed!!!!!

/home/documents/files/scooter17.dat I am trying to cut out everything upto scooter17.dat so that it will only print out the scooter17.dat any ideas? great advices will be greatly appreciated. Thank you ********Updated*************** Thank you for the replys. It works!!... (4 Replies)
Discussion started by: scooter17
4 Replies
Login or Register to Ask a Question
A2P(1)							 Perl Programmers Reference Guide						    A2P(1)

NAME
a2p - Awk to Perl translator SYNOPSIS
a2p [options] [filename] DESCRIPTION
A2p takes an awk script specified on the command line (or from standard input) and produces a comparable perl script on the standard output. OPTIONS Options include: -D<number> sets debugging flags. -F<character> tells a2p that this awk script is always invoked with this -F switch. -n<fieldlist> specifies the names of the input fields if input does not have to be split into an array. If you were translating an awk script that processes the password file, you might say: a2p -7 -nlogin.password.uid.gid.gcos.shell.home Any delimiter can be used to separate the field names. -<number> causes a2p to assume that input will always have that many fields. -o tells a2p to use old awk behavior. The only current differences are: o Old awk always has a line loop, even if there are no line actions, whereas new awk does not. o In old awk, sprintf is extremely greedy about its arguments. For example, given the statement print sprintf(some_args), extra_args; old awk considers extra_args to be arguments to "sprintf"; new awk considers them arguments to "print". "Considerations" A2p cannot do as good a job translating as a human would, but it usually does pretty well. There are some areas where you may want to examine the perl script produced and tweak it some. Here are some of them, in no particular order. There is an awk idiom of putting int() around a string expression to force numeric interpretation, even though the argument is always integer anyway. This is generally unneeded in perl, but a2p can't tell if the argument is always going to be integer, so it leaves it in. You may wish to remove it. Perl differentiates numeric comparison from string comparison. Awk has one operator for both that decides at run time which comparison to do. A2p does not try to do a complete job of awk emulation at this point. Instead it guesses which one you want. It's almost always right, but it can be spoofed. All such guesses are marked with the comment ""#???"". You should go through and check them. You might want to run at least once with the -w switch to perl, which will warn you if you use == where you should have used eq. Perl does not attempt to emulate the behavior of awk in which nonexistent array elements spring into existence simply by being referenced. If somehow you are relying on this mechanism to create null entries for a subsequent for...in, they won't be there in perl. If a2p makes a split line that assigns to a list of variables that looks like (Fld1, Fld2, Fld3...) you may want to rerun a2p using the -n option mentioned above. This will let you name the fields throughout the script. If it splits to an array instead, the script is probably referring to the number of fields somewhere. The exit statement in awk doesn't necessarily exit; it goes to the END block if there is one. Awk scripts that do contortions within the END block to bypass the block under such circumstances can be simplified by removing the conditional in the END block and just exiting directly from the perl script. Perl has two kinds of array, numerically-indexed and associative. Perl associative arrays are called "hashes". Awk arrays are usually translated to hashes, but if you happen to know that the index is always going to be numeric you could change the {...} to [...]. Iteration over a hash is done using the keys() function, but iteration over an array is NOT. You might need to modify any loop that iterates over such an array. Awk starts by assuming OFMT has the value %.6g. Perl starts by assuming its equivalent, $#, to have the value %.20g. You'll want to set $# explicitly if you use the default value of OFMT. Near the top of the line loop will be the split operation that is implicit in the awk script. There are times when you can move this down past some conditionals that test the entire record so that the split is not done as often. For aesthetic reasons you may wish to change index variables from being 1-based (awk style) to 0-based (Perl style). Be sure to change all operations the variable is involved in to match. Cute comments that say "# Here is a workaround because awk is dumb" are passed through unmodified. Awk scripts are often embedded in a shell script that pipes stuff into and out of awk. Often the shell script wrapper can be incorporated into the perl script, since perl can start up pipes into and out of itself, and can do other things that awk can't do by itself. Scripts that refer to the special variables RSTART and RLENGTH can often be simplified by referring to the variables $`, $& and $', as long as they are within the scope of the pattern match that sets them. The produced perl script may have subroutines defined to deal with awk's semantics regarding getline and print. Since a2p usually picks correctness over efficiency. it is almost always possible to rewrite such code to be more efficient by discarding the semantic sugar. For efficiency, you may wish to remove the keyword from any return statement that is the last statement executed in a subroutine. A2p catches the most common case, but doesn't analyze embedded blocks for subtler cases. ARGV[0] translates to $ARGV0, but ARGV[n] translates to $ARGV[$n-1]. A loop that tries to iterate over ARGV[0] won't find it. ENVIRONMENT
A2p uses no environment variables. AUTHOR
Larry Wall <larry@wall.org> FILES
SEE ALSO
perl The perl compiler/interpreter s2p sed to perl translator DIAGNOSTICS
BUGS
It would be possible to emulate awk's behavior in selecting string versus numeric operations at run time by inspection of the operands, but it would be gross and inefficient. Besides, a2p almost always guesses right. Storage for the awk syntax tree is currently static, and can run out. perl v5.12.4 2011-06-01 A2P(1)