syntax for IF test or AWK for octal Post: 302604070

Sponsored Content

Top Forums Shell Programming and Scripting syntax for IF test or AWK for octal Post 302604070 by sboxtops on Friday 2nd of March 2012 09:57:09 PM

03-02-2012

Registered User

syntax for IF test or AWK for octal

Using korn shell. I am reading a file line by line. If a record has a carriage return (octal 015) then I append the second record to the first record. Not all records have a carriage return. I have the unix shell script working with grep, but when my file has +100,000 records it runs slow. I would like to see if the shell script would run faster with an IF Test or AWK. I can't get the syntax right for the IF test. I don't know AWK, if you think this would run faster I would appreciate know how to code it.

1) I was doing some time testing to see where my shell script was slow. This runs fast.

Code:

#!/bin/ksh
file_in=file.txt
file_out=file.txt_out
cnt_in=0
while read LINE
do
   cnt_in=$(( cnt_in + 1 ))
   echo $LINE >> $file_out
done < $file_in

2) This runs slow
#!/bin/ksh
dir1=/tdcexports/db2/stage
file_in=file.txt
file_out=file.txt_out
cnt_in=0
while read LINE
do
   cnt_in=$(( cnt_in + 1 ))
   ck_carriage=`echo $LINE | grep -c ^M`
   echo $LINE >> $file_out
done < $file_in

3) I've tried various IF but didn't find the right syntax yet. This doesn't work properly:

Code:

if [ $LINE  = '\015' ]
     then echo equal
     else echo no equal
   fi

Thank you for your help.

Last edited by radoulov; 03-03-2012 at 03:11 AM.. Reason: Code tags!

sboxtops

View Public Profile for sboxtops

Find all posts by sboxtops

10 More Discussions You Might Find Interesting

1. Programming

octal and strings

hi i have a peculiar problem...i have a number of stirngs separated by a '/0'. it looks somethings like: char test="abk\0jsdhj\01234\0" actually i will be reading this from a file or something... im supposed to change the \0 to a ',' but in C the octal representation starts with a '\'......

2. UNIX for Dummies Questions & Answers

Display permissions in octal format

Hi, Is there any way to display the permissions in octal format rather than "rwxrwxrwx" format. I have a file and i want to see the permissions in octal format. Please help.

3. Shell Programming and Scripting

syntax error in shell test: unknown operator

Hi All, can some one figure out the syntax issue here. How to overcome this? #!/bin/sh $ HFR_MAIL=NO $ PRP_MAIL=NO $ MC_MAIL=NO $ if && && ]; then > echo "NO " > else > echo "YES" > fi test: unknown operator NO $ if && && ]; then > echo "NO" > else > echo "YES" >...

4. Shell Programming and Scripting

[bash]printf octal instead of decimal

Hello everybody, I would like to understand why the printf function is returning me an octal value with this command : printf %4.4d 0010 returns 0008 printf %4.4d 10 returns 0010 Thanks for help.

5. Shell Programming and Scripting

syntax error for if statment test expression

Hi what's the correct way of writing if 1)if "$time_diff" -gt 5 then echo "killing hung process \n" fi 2)if test $time_diff -gt 5 then echo "killing hung process \n" fi where -time_diff=$(($Sam - $current_min)) and current_min=`date +%M` infact both are giving Syntax...

6. Shell Programming and Scripting

Test on string containing spacewhile test 1 -eq 1 do read a $a if test $a = quitC then break fi d

This is the code: while test 1 -eq 1 do read a $a if test $a = stop then break fi done I read a command on every loop an execute it. I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test. For example echo hello. Now the...

7. Shell Programming and Scripting

How to check weather a string is like test* or test* ot test in if condition

How to check weather a string is like test* or test* ot *test* in if condition

8. UNIX for Dummies Questions & Answers

Deleting octal values

I have some junk values in my files é��ad. am able to find the octal values as below by using od command. 303 251 265 266 204 211 274 261 244 241 141 144 i want to know how to delete the octal this values .

9. UNIX for Dummies Questions & Answers

Problem with test syntax in script

Hi guys here i'm again with more question The code below try to find an user and write everything about him if exist, so my problem appear on line of test, where the program test if the user has secondary groups related. The rest it's clear # usugrup.sh lista todas las caracteristicas de un...

10. Shell Programming and Scripting

Problem with gstat and octal value

Here are a few lines from my script. The problem I am having is that the statement for gstat returns this error: line 43: The statement is coming from gstat. Is there a way to fix it? Apparently -eq 02 is coming up as some octal value, I need it to be recognized as 02. Apparently in...

LEARN ABOUT DEBIAN

px_put_recordn

PX_PUT_RECORDN(3)					     Library Functions Manual						 PX_PUT_RECORDN(3)

NAME

       PX_put_recordn -- Stores record in Paradox file at certain position

SYNOPSIS

       #include <paradox.h>

       int PX_put_recordn(pxdoc_t *pxdoc, char *data, int recpos)

DESCRIPTION

       Stores  a  record  in the buffer data into a Paradox file at the given position recpos.	The first position has number 0. The function will
       determine the data block for this record. If the position is after the last data block, then as many as needed empty data  blocks  will	be
       added.  If the position is in the middle of a data block and there is no record right before the position, then the position will be recal-
       culated to make sure the new record will be stored in the first free slot of the datablock. For example, if a datablock contains H  records
       and  the first call of PX_put_recordn wants to store a record at postion 11, then this will be corrected to position H. PX_put_recordn will
       also add an empty data block and store the record as the first record of the second data block.	Storing a second  record  at  position	11
       again, will be executed without any position change.

       data  must  be constructed with PX_put_data_xxx(3) functions before. It is of the same structure as the record returned by PX_get_record(3)
       and PX_get_record2(3).

RETURN VALUE

       Returns the record position on success and -1 on failure. The first position has number 0.

SEE ALSO

       PX_get_record(3), PX_get_record2(3), PX_put_record(3),  PX_put_data_byte(3),  PX_put_data_short(3),  PX_put_data_long(3),  PX_put_data_dou-
       ble(3), PX_put_data_alpha(3)

AUTHOR

       This manual page was written by Uwe Steinmann uwe@steinmann.cx.

																 PX_PUT_RECORDN(3)

10 More Discussions You Might Find Interesting

1. Programming

octal and strings

Discussion started by: strider

2. UNIX for Dummies Questions & Answers

Display permissions in octal format

Discussion started by: venkatesht

3. Shell Programming and Scripting

syntax error in shell test: unknown operator

Discussion started by: shellscripter

4. Shell Programming and Scripting

[bash]printf octal instead of decimal

Discussion started by: dolphin06