02-26-2009
Hi Franklin52,
Thanks for your ur update,but i guess this does not fill the requirement and hence i am getting it wrong.
The line ==>> nawk 'NR==FNR{a[$0];next}!($1 in a)' file2 file1
what this line will do it will each string on each line from file two and compare it with strings present in file1 and print all the string which are present in file1.
Now my requirement is that i have collected all the strings in some third file and if there are some strings in the third file then only i want to insert a string at the beginning of the file.Because later i would be testing whether any string got collected in the third file.
Eg:
nawk 'NR==FNR{a[$0];next}!($1 in a)' file2 file1 >> /tmp/file3
if [ -s /tmp/file3 ] ; then
==== here it is checking whether there is any content in file3 and if this condition is true then i want to insert a string (EG:FAILED) at the beginning of the file /tmp/file3
How can i do it.
Because as franklin said if i am doing
awk 'NR==FNR{a[$0];next}!($1 in a)END{print "FAILED"}' file2 file1 >> /tmp/file3
and if file1 and file2 contents are same then /tmp/file3 file will be empty and there i dont need to insert any string but with this line :
awk 'NR==FNR{a[$0];next}!($1 in a)END{print "FAILED"}' file2 file1 >> /tmp/file3
it is inserting that string event to the empty file.
i hope i have made my piont clear,if not please let me know. Please help..!!
Thanks
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LEARN ABOUT OPENSOLARIS
script
script(1) User Commands script(1)
NAME
script - make record of a terminal session
SYNOPSIS
script [-a] [filename]
DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
record is saved in the file typescript. See WARNINGS.
The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
when the forked shell exits or when Control-d is typed.
OPTIONS
The following option is supported:
-a Appends the session record to filename, rather than overwriting it.
NOTES
script places everything that appears on the screen in filename, including prompts.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5)
WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
privileged user, that is, root. Be sure that typescript is not a link before running script.
SunOS 5.11 30 Jan 2004 script(1)