How to execute a command on each line of output from another command?
Hello
new to bash not to programming.
I have an on-going need to change the owning group on sets of files and directories from the one they were created with or changed to on update to the one they need to have going forward.
Code:
find {target_root} -group wrong_group
gets me a newline delimited list of files that associate with the wrong group
Code:
chgrp correct_group {file}
makes the correct change to an arbitrary file
I need the way execute the latter command on each line of output from the former command?
Hi,
I've would like to create kill statement from sqlplus output.
So, I've modified somoene's script :
mud_kill_stmt=`sqlplus -s / as sysdba <<EOF
select 'kill -9 ' || p.SPID || ';' statement from $process_view p, $session_ ......... and so on
exit;
EOF`
$mud_kill_stmt | tr ... (1 Reply)
Net::SSH::Perl ...... how to print the output in a proper format
my $cmd = "ls -l";
my $ssh = Net::SSH::Perl->new($host);
$ssh->login($user, $pass);
my($stdout, $stderr, $exit) = $ssh->cmd("$cmd");
print $stdout;
the script works fine, but i am unable to see the output... (2 Replies)
Hi,
I am using solaris 10 and bash shell.Script execution follows below.Initially it will check whether a directory exists or not if does not exist it will create it.(This I have completed)
Second step:I have four users say user1,user2,user3,user4.Script should prompt for the user id and... (11 Replies)
Sed command to replace a line in a file using line number from the output of a pipe.
Is it possible to replace a whole line piped from someother command into a file at paritcular line...
here is some basic execution flow..
the line number is 412
lineNo=412
Now i have a line... (1 Reply)
Hi ALL,
I have a requirement like this.
1.GET ALL TABLE NAME (just table name) keep in file
2.Read line by line and get the count of table from tablename files.
tablename detail has a sql statement "db2 select tabname from syscat.tables" (1 Reply)
Hello ,
I am trying to run a NetBackup command in remote server. Also this command can only be run by root so I am using sudo . Also I want the output of the command locally in a file.
The below command asked for password , ran successfully and showed Output on my local server screen
... (2 Replies)
I have a simple task to replace unix line feed end of line characters with carriage returns.
When I run the following “change file in place” sed instruction from the command line all the Line feeds are successfully replaced with Carriage returns.
sed -i 's/$/\r/' lf_file.txt
But that same... (1 Reply)
I need to modify a bash script to to take each line in a file and execute command. I currently have this:
#!/bin/bash if ; then echo "Lipsa IP"; exit; fi i=1 ip=$1 while ; do if ; then rand=`head -$i pass_file | tail -1` user=`echo $rand | awk '{print $1}'` pass=`echo $rand | awk '{print $2}'`... (3 Replies)
Hello Forum,
I'm looking to expand the following command:
INACTIVE_KERNELS=$(python -mplatform | grep -qi red && rpm -qa | grep '^kernel-' |grep -vE `uname -r` | paste -sd \; || echo "Not Red Hat Server")
Currently this command will check if my server is RedHat server using the grep -qi... (6 Replies)
The following is a multi-line shell command example:
$cargo build
Compiling prawn v0.1.0 (/Users/ag/rust/prawn)
error: failed to resolve: could not find `setup_panix` in `human_panic`
--> src/main.rs:14:22
|
14 | human_panic::setup_panix!();
| ... (2 Replies)
Discussion started by: yogi
2 Replies
LEARN ABOUT LINUX
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)