Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: sed command to remove the first field from a '|' delimited file
Top Forums Shell Programming and Scripting sed command to remove the first field from a '|' delimited file Post 302541177 by mirni on Friday 22nd of July 2011 05:02:46 PM
Old 07-22-2011
Well, that's what -i (in-place edit) of sed does. If your version of sed doesn't support it, then temporary file can be used, just like you did. You could do without, with a (rather obscure) construct:
Code:
{ rm input.txt && sed 's/^[^|]*|//' > input.txt; } < input.txt

Same thing with cut
Code:
{ rm input.txt && sed 's/^[^|]*|//' > input.txt; } < input.txt

Or, using a subshell instead of a block:
Code:
( rm input.txt && sed 's/^[^|]*|//' > input.txt ) < input.txt

But, in my opinion, these are quite artificial, and it's much more clear doing:
Code:
sed 's/^[^|]*|//' input.txt > input.txt.tmp && mv input.txt.tmp input.txt


Please use code tags when posting code and/or sample in/output.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Replacing a field in pipe delimited TEXT File

Hi, I want to replace a field in a text delimited file with the actual number of records in the same file. HDR|ABCD|10-13-2008 to 10-19-2008.txt|10-19-2008|XYZ DTL|0|5464-1|0|02-02-2008|02-03-2008||||F||||||||| DTL|1|5464-1|1|02-02-2008|02-03-2008|1||JJJ... (3 Replies)
Discussion started by: ravi0435
3 Replies

2. Shell Programming and Scripting

Count field frequency in a '|' delimited file

I have a large file with fields delimited by '|', and I want to run some analysis on it. What I want to do is count how many times each field is populated, or list the frequency of population for each field. I am in a Sun OS environment. Thanks, - CB (3 Replies)
Discussion started by: ChicagoBlues
3 Replies

3. Shell Programming and Scripting

insert a field into a tab delimited file

Hello, Can someone help me to do this with awk or sed? I have a file with multiple lines, each line has many fields separated with a tab. I would like to add one more field holding 'na' in between the first and second fields. old file looks like, 1, field1 field2 field3 ... 2, field1... (7 Replies)
Discussion started by: ssshen
7 Replies

4. UNIX for Dummies Questions & Answers

Insert Field into a tab-delimited file

Hello, I have about 100 files in a directory with fields which are tab delimited. I would like to append the file name as the first field and it has to be done as many times as the total lines in the file. For example, myFile1.txt has the following data: 1 x y z 2 a b ... (5 Replies)
Discussion started by: Gussifinknottle
5 Replies

5. Shell Programming and Scripting

Trying to use sed to remove the value of one field from another field

I'm trying to use sed to remove the value of one field from another field. For example: cat inputfile 123|ABC|Generic_Textjoe@yahoo.com|joe@yahoo.com|DEF 456|GHI|Other_recordjohn@msn.com|john@msn.com|JKL 789|MNO|No_Email_On_This_One|smith@gmail.com|PQR I would like to remove the email... (2 Replies)
Discussion started by: bribri87
2 Replies

6. Shell Programming and Scripting

Pad zeroes first field in a Delimited file

Need help. I tried using an awk command to pad zeroes. Unfortunately, the "|" pipe delimited character is gone when I tried to write the records to another file. awk -F \| ' {$1=sprintf("%06s", $1); print $0}' $CUSTFINAL2 > $CUSTFINAL3 BEFORE "KEYRECORD"|"SA ID"|"PER ID"|"SP ID"|"ACCT... (3 Replies)
Discussion started by: johnhips
3 Replies

7. UNIX for Dummies Questions & Answers

add new 'date field' in a pipe delimited file

i need to add a new field in a pipe delimited line. the field will be the current date today. aa|a|s|w|1 as|oiy|oiy|oiy|2 given that all lines are uniformed in the number of fields i want it to look like this:\ aa|a|s|w|1|20120126 as|oiy|oiy|oiy|2|20120126 please help :) (3 Replies)
Discussion started by: kokoro
3 Replies

8. Shell Programming and Scripting

Remove Last field from a delimited file

Hi, I have a '~' delimited file and i want to remove the last field using awk. Please find the sample records below: 1428128~1~0~1100426~003~50220~005~14~0~194801~11~0~3~14~0~50419052335~0~0820652001~2~00653862 ~0~1~0~00126~1~20000110~20110423~R~ ~0~Z~1662.94~ ~002041~0045~Z~... (3 Replies)
Discussion started by: Arun Mishra
3 Replies

9. Shell Programming and Scripting

How to remove alphabets/special characters/space in the 5th field of a tab delimited file?

Thank you for 4 looking this post. We have a tab delimited file where we are facing problem in a lot of funny character. I have tried using awk but failed that is not working. In the 5th field ID which is supposed to be a integer only of that file, we are getting corrupted data as below. I... (12 Replies)
Discussion started by: Srithar
12 Replies

10. Shell Programming and Scripting

Replace field in the delimited file

Hi, I have the requirement similar to the one mentioned in the below thread. https://www.unix.com/unix-for-dummies-questions-and-answers/128155-search-replace-string-only-particular-column-delimited-file.html The only difference is that I need to change the field for row 1,2 and the last... (14 Replies)
Discussion started by: chetanojha
14 Replies

LEARN ABOUT REDHAT

ps2ascii

PS2ASCII(1)							 Ghostscript Tools						       PS2ASCII(1)

NAME

       ps2ascii - Ghostscript translator from PostScript or PDF to ASCII

SYNOPSIS

       ps2ascii [ input.ps [ output.txt ] ]
       ps2ascii input.pdf [ output.txt ]

DESCRIPTION

       ps2ascii  uses  gs(1) to extract ASCII text from PostScript(tm) or Adobe Portable Document Format (PDF) files. If no files are specified on
       the command line, gs reads from standard input; but PDF input must come from an explicitly-named file, not standard input.   If	no  output
       file is specified, the ASCII text is written to standard output.

       ps2ascii  doesn't  look at font encoding, and isn't very good at dealing with kerning, so for PostScript (but not currently PDF), you might
       consider pstotext (see below).

FILES

       Run "gs -h" to find the location of Ghostscript documentation on your system, from which you can get more details.

SEE ALSO

       pstotext(1), http://www.research.digital.com/SRC/virtualpaper/pstotext.html

VERSION

       This document was last revised for Ghostscript version 7.05.

AUTHOR

       L. Peter Deutsch <ghost@aladdin.com> was the original author.   The  current  version  has  substantial	improvements  by  David  M.  Jones
       <dmjones@theory.lcs.mit.edu>.

7.05								   22 April 2002						       PS2ASCII(1)
All times are GMT -4. The time now is 09:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy