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 OPENSOLARIS
tee
tee(1) User Commands tee(1)NAME
tee - replicate the standard output
SYNOPSIS
/usr/bin/tee
/usr/bin/tee [-ai] [file]...
ksh93
tee [-ail] [file]...
DESCRIPTION
/usr/bin/tee
/usr/bin/tee copies standard input to standard output, making a copy in zero or more files. tee does not buffer its output. The options
determine if the specified files are overwritten or appended to.
ksh93
The tee built-in in ksh93 is associated with the /bin and /usr/bin paths. It is invoked when tee is executed without a pathname prefix and
the pathname search finds a /bin/tee or /usr/bin/tee executable.
tee copies standard input to standard output and to zero or more files. The options determine whether the specified files are overwritten
or appended to. The tee utility does not buffer output. If a write to a file fails, tee continues to write to other files although it exits
with a non-zero exit status.
The number of file operands that can be specified is limited by the underlying operating system.
OPTIONS
/usr/bin/tee
The following options are supported by /usr/bin/tee:
-a Appends the output to the files rather than overwriting them.
-i Ignores interrupts.
ksh93
The following options are supported by the tee built-in command in ksh93:
-a Appends the output to the files rather than overwriting them.
--append
-i Ignores SIGINT signal.
--ignore-interrupts
-l Sets the standard output to be line buffered.
--line-buffer
OPERANDS
The following operands are supported:
file A path name of an output file. Processing of at least 13 file operands are supported.
USAGE
See largefile(5) for the description of the behavior of tee when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of tee: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
/usr/bin/tee
The following exit values are returned by /usr/bin/tee:
0 The standard input was successfully copied to all output files.
>0 The number of files that could not be opened or whose status could not be obtained.
ksh93
The following exit values are returned by tee in ksh93:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
/usr/bin/tee
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|Standard |See standards(5). |
+-----------------------------+-----------------------------+
ksh93
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |See below. |
+-----------------------------+-----------------------------+
The ksh93 built-in binding to /bin and /usr/bin is Volatile. The built-in interfaces are Uncommitted.
SEE ALSO cat(1), ksh93(1), attributes(5), environ(5), largefile(5), standards(5)SunOS 5.11 20 Nov 2007 tee(1)