I trying to write a script in bash that take a list of users in “fileA” and searches another list user in “fileB” if the user does not exist in “file B” write the user to another file “file C”.
Please note “fileA” and “fileB” contains over 1000 users
Basically
Code:
“fileA” “fileB”
Abc Tom
Def John
Tom Jonathan
Paul Paul
Wood Graham
Result in FileC
Code:
Abc
Def
Wood
Here my attempt
Code:
for i in `cat fileA`; do grep –w $i fileB; test [$? –ne 0] && echo $i >fileC fi; done
Can you help please my attempt is not working?
Thanks
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Please use code tags when posting data and code samples!
Last edited by vgersh99; 10-29-2011 at 06:32 PM..
Reason: code tags, please!
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LEARN ABOUT SUSE
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 filename 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)
10-29-2011
