04-25-2008
How to search and replace text in same file
script is as below
v_process_run=5
typeset -i p_cnt=0
pdata=/home/proc_data.log
while [ $p_cnt -le $v_process_run ]
do
# execute script in background
dummy_test.sh "a1" "a2" &
p_cnt=$p_cnt+1
echo "data : $p_cnt : Y" >> $pdata
done
file created with following data in /home/proc_data.log
data : 1 : Y
data : 2 : Y
data : 3 : Y
data : 4 : Y
data : 5 : Y
now when each background process is completed
want to delete the line for matching pattern from log file without redirecting to new file ( below command is not working , please suggest)
for example :
grep "data : 3 : Y" /home/proc_data.log | sed "/data : 3 : Y/d"
or
now when each background process is completed
want to update the line for that process from log file
without redirecting to new file ( please suggest);
search for : data : 3 : Y
and relace with : data : 3 : N
hence output in the file should be
data : 1 : Y
data : 2 : Y
data : 3 : N
data : 4 : Y
data : 5 : Y
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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 5.10 30 Jan 2004 script(1)