error redirection

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1. Shell Programming and Scripting

Unable to catch the redirection error when the disk is full

Hi Experts, Problem summary : I am facing the below problem on huge files when the disk is getting full on the half way through the execution. If the disk was already full , the commands fail & everything is fine. Sample Code : head_rec_data_file=`head -1 sample_file.txt` cat...

2. Shell Programming and Scripting

Error redirection question

Hi gurus, I have a question, need some of your inputs... I have a command like this : export LINE_COUNT=`wc -l test.dat | awk '{print $1}'` echo $LINE_COUNT --- > gives me 2 which is fine as the file has 2 lines. This works fine if the file test.dat is present but in case...

3. UNIX for Dummies Questions & Answers

about different redirection

explain the redirections 1>, 2>, 3>, ..... and 1< ,2<,3<..... where we use these things thanks Thread moved from AIX forum

4. Shell Programming and Scripting

redirection error

Hi i am facing a very strange problem suppose the parameters which i passed to the script is -o 140 then my code is as follows echo $* | awk '{ for ( i=0;i<=NF;i++){if ($i= -o) { print ${i+1} } } ' | read abc echo $abc abc=`echo $* | awk '{ for ( i=0;i<=NF;i++){if ($i= -o) { print...

5. Shell Programming and Scripting

I/O Redirection: how can I redirect error msgs to a temp file

Hi there, I just want to know how can I redirect error msgs returned from running a command (e.g. nslookup) and then only print out the correct output using an if statement?. I've tried the following: where $a is a list of IPs. but I got all the error msgs printed out to screen and...

6. Shell Programming and Scripting

Error with redirection in awk

I'm trying to find average of values in 2nd column in some files. Filenames have following pattern eg: tau_2.54_even_v1.xls tau_2.54_odd_v1.xls tau_1.60_v1.xls tau_800_v1.xls #!/bin/bash for file in pmb_mpi tau xhpl mpi_tile_io fftw ; do for f in "2.54" "1.60" "800" ;do if...

7. Shell Programming and Scripting

output and error redirection

hi :) if condition >&- 2>&- Can anybody explain the redirection in above command Thanks in advance

8. Shell Programming and Scripting

sed error : Syntax error: redirection unexpected

My script is throwing the error 'Syntax error: redirection unexpected' My line of code.. cat nsstatustest.html | sed s/<tr><td align="left">/<tr><td align="left" bgcolor="#000000"><font color="white">/ > ztmp.Ps23zp2s.2-Fpps3-wmmm0dss3 HTML tags are getting in the way but they're needed to...

9. Shell Programming and Scripting

Error file Redirection

Hello All, I was wondering is there any other way in Shell Scripting to redirect the errors to a output file inside a shell script with using a error status checking or a command line redirection. Say without doing this ksh test.ksh 2> error.txt or without doing this ... if ; then...

10. Shell Programming and Scripting

Redirection or piping error message

I have written a script that appears to work correctly in testing, but is coming up with a starnge error message, script_name: test: 0403-004 Specify a parameter with this command. Redirection or piping of stdin or stdout is allowed only with -b. (156). The script is run by different...

LEARN ABOUT DEBIAN

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)

UNIX for Dummies Questions & Answers