04-24-2012
If your perl code is nothing but a thin membrane atop 90% shell scripting, it might be time to learn shell, as well. I used to write enormous perl scripts before realizing, if I removed the perl, I'd be left with something simpler and more functional.
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1. UNIX for Advanced & Expert Users
I have to execute some commands after executing one command ( cleartool setview Tagname)
Problem is that I write commands in script like this.
echo "test1"
cleartool setview tagname
echo "test2"
copy file1 file2
echo "test3"
but when I execute script.
Output
---------
test1
If I... (1 Reply)
Discussion started by: udaykishore
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2. Shell Programming and Scripting
Hey there,
I am trying to pass a command as argument to a function.
The command shows up in $1.
Now I want to execute this command, but if I do a $1
./sample
"bla/blaprintf: warning: ignoring excess arguments, starting with `bla/bla'
The code is :
#!/bin/ksh
fn()
{
$1
}
fn... (3 Replies)
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3. Shell Programming and Scripting
Hi,
I am trying to execute a bunch of piped command which are stored in a variable, but only one command executed at a time, and rest of the pipes, commands and their arguments are considered as argument to the very first command.
Can you please help me in this?
bash-2.05$ cat test.sh... (1 Reply)
Discussion started by: prashant.ladha
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4. UNIX for Dummies Questions & Answers
the ssh calling convention:
ssh <server>
If I put commands in the section, ssh will execute them immediately after logging in and return to local shell. I want to stay in the remote shell after executing these commands. How can I achieve this?
Thanks for all. (1 Reply)
Discussion started by: hplonlien
1 Replies
5. UNIX for Dummies Questions & Answers
I can't get this to work. Running a single command works fine:
find . -name "*.dat" -exec wc -l '{}' \;
gives me the file name and number of lines in each .dat file in the directory.
But what if I want to pipe commands, e.g. to grep something and get the number of lines with that pattern... (3 Replies)
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6. Shell Programming and Scripting
Hi All,
I am trying to execute a shell script containg awk commands. But unable to do so. Below is my script. Please help.
The name of the script is scan.sh and I have tried executing it using the command sh scan.sh
It is giving an error which reads like:
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7. Homework & Coursework Questions
I am a student in BCIT in vancouver and taking comp2771 course.(Shell scripting).
I would like to know what are different ways of executing shell commands?
Thanks (1 Reply)
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8. Shell Programming and Scripting
Hello
In the shell script we have a FTP command like below
ftp -n -v -q winftp.principal.com >/infa/datafiles/GRP/Scripts/ftp_from_infa_dvcn.log<<END_SCRIPT
quote USER $FTP_USER
quote PASS $FTP_PASS
ascii
lcd $FTP_LOCALDIR
cd $FTP_FLDR
put $FTP_FILE
bye
exit
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9. Shell Programming and Scripting
I would like to execute a commands in four different servers through ssh at a single instance(simultaneously).
Below are the details with examples,
ssh user1@server1 "grep xxxx logs"
ssh user1@server2 "grep xxxx logs"
ssh user1@server3 "grep xxxx logs"
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10. Shell Programming and Scripting
If you want to capture the output of any command, we then will be writing the system command in `` or qx.
`` an qx works fine with all linux and windows system commands.
But when I execute the below code.. it is displaying the output on the screen directly instead of storing to variable
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SMRSH(8) System Manager's Manual SMRSH(8)
NAME
smrsh - restricted shell for sendmail
SYNOPSIS
smrsh -c command
DESCRIPTION
The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files. It sharply limits
the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system. Briefly,
even if a ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs
that he or she can execute.
Briefly, smrsh limits programs to be in a single directory, by default /etc/smrsh, allowing the system administrator to choose the set of
acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''. It also rejects any commands with the characters
``', `<', `>', `;', `$', `(', `)', `
' (carriage return), or `
' (newline) on the command line to prevent ``end run'' attacks. It allows
``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/procmail -f- /etc/procmailrcs/user || exit 75"''
Initial pathnames on programs are stripped, so forwarding to ``/usr/ucb/vacation'', ``/usr/bin/vacation'', ``/home/server/mydir/bin/vaca-
tion'', and ``vacation'' all actually forward to ``/etc/smrsh/vacation''.
System administrators should be conservative about populating the /etc/smrsh directory. Reasonable additions are vacation(1), procmail(1),
and the like. No matter how brow-beaten you may be, never include any shell or shell-like program (such as perl(1)) in the /etc/smrsh
directory. Note that this does not restrict the use of shell or perl scripts in the sm.bin directory (using the ``#!'' syntax); it simply
disallows execution of arbitrary programs.
FILES
/etc/smrsh - directory for restricted programs
SEE ALSO
sendmail(8)
$Date: 2002/04/25 13:33:40 $ SMRSH(8)