Sponsored Content
Top Forums Shell Programming and Scripting Trouble with tee command to capture script outputs Post 302288220 by muthubharadwaj on Monday 16th of February 2009 06:09:00 PM
Old 02-16-2009
Your comment "all commands except the last are executed in a sub-shell" explains the behavior, which is what I though though was not sure. What exactly is the "last one", the tee command itself, the rightmost one I guess? In my context, the command which I run and pipe the output to using tee is a "shell function" defined within the script - not a script different from the one that calls it. Usually functions run in the same shell as the one in which the script calling them runs. Including pipe seems to make a difference ot the bahavior. Thanks anyway for your time and effort in responding.
 

10 More Discussions You Might Find Interesting

1. Cybersecurity

What command or script to capture a system snapshot?

Some background on what I am trying to accomplish - Accreditation/Certification for DoD (Unix/Linux) system: I am trying to improve the process for capturing key system information in preparation for performing a formal security review of a Unix or Linux system. This is in addition to the SRR... (1 Reply)
Discussion started by: SecureMe
1 Replies

2. UNIX and Linux Applications

Tee with pipe command.

cat work.txt M|324324|32424|3431 M|324324|32424|3431 N|324324|32426|3432 N|324324|32424|3434 M|324324|32424|3435 cat work.txt | tee $( grep '^M' > m.txt ) | $( grep '^N' > n.txt ) cehpny00:/home01/sr38632 $ cat m.txt M|324324|32424|3431 M|324324|32424|3431 M|324324|32424|3435 ... (2 Replies)
Discussion started by: rsampathy
2 Replies

3. Shell Programming and Scripting

create outputs from other command outputs

hi friends, The code: i=1 while do filename=`/usr/bin/ls -l| awk '{ print $9}'` echo $filename>>summary.csv #Gives the name of the file stored at column 9 count=`wc -l $filename | awk '{print $1}'` echo $count>>summary.csv #Gives just the count of lines of file "filename" i=`expr... (1 Reply)
Discussion started by: rajsharma
1 Replies

4. Shell Programming and Scripting

tee + more command

script1: #!/bin/ksh more test.txt script2: calling the script1 #!/bin/ksh /tmp/script1.sh 2>&1 | tee tee.log where test.txt contains ~1200 lines. When I execute the script2 the more command does not print pagewise it goes to the end of the line, when I remove the tee command it... (4 Replies)
Discussion started by: prasad111
4 Replies

5. UNIX for Advanced & Expert Users

Equivalents of tee command to find exit status of command

Hi, Want to log the output of command & check the exit status to find whether it succeeded or failed. > ls abc ls: abc: No such file or directory > echo $? 1 > ls abc 2>&1 | tee log ls: abc: No such file or directory > echo $? 0 Tee commands changes my exit status to be always... (7 Replies)
Discussion started by: vibhor_agarwali
7 Replies

6. Shell Programming and Scripting

Capture IP and command type in linux script

hi guys, is there any way to capture the ip address of users who log-in to linux then capture the command executed together with the time and date? example output 192.1.1.1 : ls -ltr Aug 6 16:38:40thanks in advance. (2 Replies)
Discussion started by: d3xt3r
2 Replies

7. UNIX for Dummies Questions & Answers

Problem using tee to capture activity - nothing happens

Hi, I'm sure this is real simple but in the looking I've done I haven't seen it addressed (or didn't realize it). I've started up a PuTTY connection to our UNIX box and started screen and script - no problems. Then I typed "tee teeKH18.txt" expecting it to start tee and dump all activity into... (2 Replies)
Discussion started by: Mike Welch
2 Replies

8. Shell Programming and Scripting

Help with tee command

In the current directory , I have seven files . But when I use the following command , it lists eight files ( 7 files + file_list.xtx) ls -1 | tee file_list.xtx | while read line; do echo $line ; done Does the tee command create the file_list.xtx file first and then executes the ls -1... (1 Reply)
Discussion started by: kumarjt
1 Replies

9. Shell Programming and Scripting

Question about tee command

I have the following script as shown below where I cat a file and then also tee the output to a file as I have to email the execution of the process to users at the end of the script: cat incoming.dat | tee -a execution.log if then echo "Issue with incoming.dat file, file not... (5 Replies)
Discussion started by: calredd
5 Replies

10. Shell Programming and Scripting

Need command to capture word from shell script and send email

Hello Experts, Greeting to all of you. I have a requirement, that we have a shell script status.sh that check the status of server and server status shows as status.sh Enterprise Server - Running Admin Server - Shutdown Requirement is like whenever the output shows shutdown it should... (2 Replies)
Discussion started by: aks_1902
2 Replies
exit(1) 							   User Commands							   exit(1)

NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps SYNOPSIS
sh exit [n] return [n] csh exit [ ( expr )] goto label ksh *exit [n] *return [n] DESCRIPTION
sh exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF will also cause the shell to exit.) return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe- cuted. csh exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr. The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end. ksh exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit except for a shell which has the ignoreeof option (See set below) turned on. return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5) SunOS 5.10 15 Apr 1994 exit(1)
All times are GMT -4. The time now is 08:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy