I have a problem that I want to insert and delete some chars in the middle of a file. fopen() and fdopen() just allow to append at the end.
Is there any simple method or existing library that allow these actions? Thanks in advance.:confused: (7 Replies)
Script 1
Pre-requisites
Create a file with x amount of lines in it, the content of your choice.
Write a script that takes two arguments. The first being a line of text, the second being your newly created file. The script should take the first argument and insert it into the very top (the... (3 Replies)
I wrote a script like
#!/bin/bash
echo $1 > temp
cat $2 >> temp
mv temp $2
now I have problem appending the above script(only using bash shell) so that it now inserts the first argument into the middle of the file.
I have tried using $(('wc -l < file' / 2 ))
but invain so could any one... (4 Replies)
how to insert one file into another file not by concatenating as usual done.
file1
A B
C D
E F
G H
I J
K L
file2
23455
33444
33334
33345
Output shud be
23455
A B
C D (4 Replies)
Can anyone help me pls? I want to add a text into the middle of file.
I've writtenthe following script
text to add="$1"
file="$2"
lines=$(wc -l $2)
half_lines=$(expr $lines / 2)
head -$half_lines $2 > temp
echo "text to add" >> temp
((half_lines=$half_lines + 1))
tail -$half_lines $2... (6 Replies)
I have tried
sed '/6/a text_to_inserted' file > newfile
but this inserts test_to_insert at random places in file and i want it in specific location, which is line 6.
can anyone help.... (6 Replies)
Hi I am trying to write a bash script to add a line of text to the middle of a file.
The way I worked it out was to calculate the number of lines and divide by 2. The file I am using is called newfile and it just contains lines of data.
The new file I have created I have called midfile and... (7 Replies)
Hi,
So far i've made a script that takes two argument, 1st is the contents and the 2nd is the named file. At the moment i've managed to insert new contents as a new line at the top, but i want to ask how can you insert contents in the middle of the file?
Source Code
#!/bin/bash
#Write... (3 Replies)
Discussion started by: zen10
3 Replies
LEARN ABOUT MINIX
cp
CP(1) General Commands Manual CP(1)NAME
cp, cpdir - file copy
SYNOPSIS
cp [-pifsmrRvx] file1 file2
cp [-pifsrRvx] file ... directory
cpdir [-ifvx] file1 file2
OPTIONS -p Preserve full mode, uid, gid and times
-i Ask before removing existing file
-f Forced remove existing file
-s Make similar, copy some attributes
-m Merge trees, disable the into-a-directory trick
-r Copy directory trees with link structure, etc. intact
-R Copy directory trees and treat special files as ordinary
-v Display what cp is doing
-x Do not cross device boundaries
EXAMPLES
cp oldfile newfile # Copy oldfile to newfile
cp -R dir1 dir2 # Copy a directory tree
DESCRIPTION
Cp copies one file to another, or copies one or more files to a directory. Special files are normally opened and read, unless -r is used.
-r also copies the link structure, something -R doesn't care about. The -s option differs from -p that it only copies the times if the
target file already exists. A normal copy only copies the mode of the file, with the file creation mask applied. Set-uid bits are cleared
if the owner cannot be set. (The -s flag does not patronize you by clearing bits. Alas -s and -r are nonstandard.)
Cpdir is a convenient synonym for cp -psmr to make a precise copy of a directory tree.
SEE ALSO cat(1), mkdir(1), rmdir(1), ln(1), rm(1).
CP(1)