Visit Our UNIX and Linux User Community

inserting into a data file

Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers inserting into a data file
# 1  
Old 10-12-2006
inserting into a data file


I have a unix variable $HDR in a script, which contains header info, and I need to create it as a new line at the top of a data file which is the input $1 in the script.

# 2  
Old 10-12-2006
# 3  
Old 10-12-2006
sed "1 i\
$HDR" $1 >temp
mv temp $1

# 4  
Old 10-12-2006
Sedless version:
  print "$HDR"
  cat $1
} > $1.tmp
mv $1.tmp $1

# 5  
Old 10-13-2006
Thank you both methods work OK

Previous Thread | Next Thread
Test Your Knowledge in Computers #593
Difficulty: Medium
C is a statically typed language so variables must be declared along with their types before using them.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Inserting data from another source

Hi, I am creating a script using Vi to go out on emails. Each email has is own set of attachments, each with a unique number eg Q12343 and Q67897. I have managed to get the script to put in the first attachment customer number ie Q12343, but can't figure out how to get the second one to come in ie... (4 Replies)
Discussion started by: Cheryl1234
4 Replies

2. UNIX for Dummies Questions & Answers

Inserting shell script input data automatically from a text file

Dear experts, I am new to linux programming. I have a shell script which i should run it on all my samples. I only define input and out put for this script. The inputs are 3 numbers(coordination numbers) which are available in a series of text file. Since i have a lots of samples, it takes a... (5 Replies)
Discussion started by: mohamadreza
5 Replies

3. Shell Programming and Scripting

Inserting data - from one file to another?

Hi Experts, I have a config file (file1) & a data file (file2) : - The file1 I want to modify : to replace "2nd fields c7? & m7? from the data from file2, -The below CPU line fields need to fill by file2's 1st colmns correspoding data. - The below MEM lines to be replaced by... (3 Replies)
Discussion started by: rveri
3 Replies

4. Shell Programming and Scripting

Need help on inserting data from text file to excel using shell script

Hi, Please help me on this. I want to insert data from text file to excel using shell script nawk -v r=4 -v c=4 -v val=$a -F, 'BEGIN{OFS=","}; NR != r; NR == r {$c = val; print}' "file.csv" I used above one to insert $a value in 4th row, 4th column in an excel file.csv and it... (3 Replies)
Discussion started by: suman.frnz
3 Replies

5. Shell Programming and Scripting

Problem with inserting data

Hi, i am doing a simple script to insert logs into particular table through shell script when i run the script, it is inserting null value. Any explanation on this. Here is my script. #!/bin/sh export db_connection_url=apps/apps@VIS ... (2 Replies)
Discussion started by: Rami Reddy
2 Replies

6. Programming

C++ inserting data in a file

Could anyone help me with an efficient(and easy) way to insert data in a file directly(with out using temp file). example open the file1.txt 11112222 333333 44444444 and insert something say " 99999 " somewhere inside the file as 11112222 333 99999 333 44444444 (2 Replies)
Discussion started by: johnbach
2 Replies

7. Shell Programming and Scripting

inserting data into a table from a flat file

Hi, I want to insert data into a table from a flat file, the file is having around 25 columns and some 10,000 records. The columns values are seperated by a space. Thanks (1 Reply)
Discussion started by: ss_ss
1 Replies

8. Shell Programming and Scripting

Help Inserting data in mysql table

Cant understand the error #!/bin/bash temp="" A="" D=$(date +"%Y-%m-%d") H=$(date +"%R") temp=$(wget -q -O - website | grep -o "Temperature:]**" | grep \-E -o "+") mysql -D "weather_wise" -e "INSERT INTO weather (Date, Hour, Degrees) VALUES ($D,$H, $temp)"; my data types for... (11 Replies)
Discussion started by: vadharah
11 Replies

9. Shell Programming and Scripting

Inserting Lines between data sets using SED?

Hello all and thanks in advance! What I'm looking to do is insert a blank line, anytime the first 9 characters of a given line don't match the first 9 characters of the previous line. i.e. Convert the data set 1 45 64 89 1 89 69 235 2 89 234 67 2 56 90... (1 Reply)
Discussion started by: selkirk
1 Replies

10. Shell Programming and Scripting

Inserting a character in a data file

Can some one tell me how I can insert a "|" (pipe) at the 15th column throughout a file? examples: to insert at begining of line i use :g/^/s//\|/ to insert at ene of line i use :g/$/s//\|/ how can i insert at the 15th column position. Thanks in advance (2 Replies)
Discussion started by: jxh461
2 Replies

Featured Tech Videos