07-27-2006
replacing a string in a file with command line parameter
Hello,
I am trying to replace a string with a paramter given along with the script.
I am replacing application1 to application2 with the script:
./change_app.sh application2
change_app.sh:
#!/bin/ksh
grep $1 applications.dat 2>&1 >/dev/null
echo $1
file=pckage.new
sed 's/Name: application1/Name: ${1}/g' "$file" > ./tmpfile
mv ./tmpfile "$file"
applications.dat has all the applications
But I get output as ${1} instead of application2. But when I echo $1, I get application2.
Please help in where I am going wrong, or if there is any better way.
Thanks
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tmpfile(3) Library Functions Manual tmpfile(3)
NAME
tmpfile - Creates a temporary file
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <stdio.h>
FILE *tmpfile ( void );
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
tmpfile(): XSH4.2
Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The tmpfile() function creates a temporary file and returns its FILE pointer. The file is opened for update. The temporary file is automat-
ically deleted when the process using it terminates.
RETURN VALUES
Upon successful completion, the tmpfile() function returns a pointer to the stream of the file that is created. Otherwise, it returns a
null pointer and sets errno to indicate the error.
ERRORS
The tmpfile() function sets errno to the specified values for the following conditions:
A signal was caught during tmpfile(). OPEN_MAX file descriptors are currently open in the calling process.
[Tru64 UNIX] All available file descriptors are currently open in the calling process. The maximum allowable number of files is
currently open in the system. The directory or file system that would contain the new file cannot be expanded.
RELATED INFORMATION
Functions: fopen(3), mktemp(3), tmpnam(3), unlink(2), getdtablesize(2)
Standards: standards(5) delim off
tmpfile(3)