Sponsored Content
Full Discussion: Bash expansion
Top Forums Shell Programming and Scripting Bash expansion Post 302991395 by Don Cragun on Friday 10th of February 2017 04:33:14 AM
Old 02-10-2017
Given that there is no way to know what files might be present in the directory in which this script might be run, to guarantee that you won't get a syntax error in find if .direct* or .xsession* expand to more than one filename, and to guarantee that all files with the desired names will be matched if either of those patterns match a single filename in the current directory, I think it would be safer to change:
Code:
F2=(! -name .direct*  ! -name .Xauthority  ! -name .xsession*  ! -name .bash_history -print)

in the code Chubler_XL suggested in post #4 to:
Code:
F2=(! -name '.direct*'  ! -name .Xauthority  ! -name '.xsession*'  ! -name .bash_history -print)

(quoting those two filename matching patterns).
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

bash - delay expansion of variable

Hello - I have a bash script which does some logging, and I'd like to include the line number of the echo statement that pipes into $LOGGER: MYPID=$$ MYNAME=`basename $0` LOGGER="/usr/bin/logger -t $MYNAME($LINENO) -p daemon.error" ... echo 'this is an entry into the log file' | $LOGGER ... (3 Replies)
Discussion started by: scandora
3 Replies

2. Shell Programming and Scripting

Brace expansion problem in Bash

I have a script that takes an option for server pools to run the script against. The option is given as a comma separated list (ie, -p 201,204,301). I'm using eval and brace expansion to get those pool numbers into an array. It works fine unless only 1 pool number is given. Here's the code: ... (5 Replies)
Discussion started by: mglenney
5 Replies

3. Shell Programming and Scripting

Bash variable delayed expansion?

i write a batch file , here is the content. dirname='date +%Y-%m-%d' mkdir dirname but it doen's work, it just create a folder named date and +%Y-%m-%d. i have tried run the command seperately in the bash prompt. after the first sentence executed , i use $dirname to watch the value of... (4 Replies)
Discussion started by: premotheus
4 Replies

4. Shell Programming and Scripting

Does SH support indirect expansion like BASH?

Hello, is there a kind soul who can answer me, does the SH support double substitution known as indirect expansion similar to BASH? The syntax for bash is ${!var}. For instance in bash I can write something like this: VAR="value" REF_VAR="VAR" echo ${!REF_VAR} and get the "value"... (1 Reply)
Discussion started by: dimentiy
1 Replies

5. Shell Programming and Scripting

Bash shell expansion help

This is what I have in my directory. $ ls test1.txt test2.txt test3.txt test4.txt test5.txt test_script.sh This is what my shellscript looks like. #!/bin/bash for filename in /shell_expansion/*.txt; do for ((i=0; i<=3; i++)); do echo "$filename" ... (5 Replies)
Discussion started by: cokedude
5 Replies

6. Shell Programming and Scripting

Bash variable expansion

Hello. The file /etc/fstab contains UUID=957c3295-9944-1593-82e2-2b90dede4312 / ext4 noatime,discard,acl,user_xattr 1 1 I fill a variable SOME_LINE=$( cat /etc/fstab | grep \/\..*ext4 | grep noatime,discard )echo $SOME_LINE... (3 Replies)
Discussion started by: jcdole
3 Replies

7. Shell Programming and Scripting

Bash Parameter Expansion

I have made the following examples that print various parameter expansions text: iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018.sac (text%.*): iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018 (text%%.*): iv-hhz-sac/hpac/hhz (text#*.): d/iv.hpac..hhz.d.2016.250.070018.sac... (2 Replies)
Discussion started by: kristinu
2 Replies

8. Shell Programming and Scripting

Bash Parameter Expansion

#!/bin/bash SNMPW='/usr/bin/snmpwalk' while read h i do loc=$($SNMPW -v3 -u 'Myusername' -l authPriv -a SHA -A 'Password1' -x AES -X 'Password2' $i sysLocation.0 2>/dev/null) loc=${loc:-" is not snmpable."} loc=${loc##*: } loc=${loc//,/} echo "$i,$h,$loc" done < $1 My question is ... ... (1 Reply)
Discussion started by: sumguy
1 Replies

9. Shell Programming and Scripting

Bash : More parameter expansion and IFS

I am trying to become more fluent with the interworking of bash and minimize the number of external calls. Sample Data. This will be the response of the snmp query. SNMPv2-MIB::sysName.0 = STRING: SomeHostName SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.9.1.1745... (5 Replies)
Discussion started by: sumguy
5 Replies

10. Shell Programming and Scripting

Use parameter expansion over a parameter expansion in bash.

Hello All, Could you please do help me here as I would like to perform parameter expansion in shell over a parameter expansion. Let's say I have following variable. path="/var/talend/nat/cdc" Now to get only nat I could do following. path1="${path%/*}" path1="${path1##*/}" Here... (8 Replies)
Discussion started by: RavinderSingh13
8 Replies
SUX(1)								   User Commands							    SUX(1)

NAME
sux - wrapper around su which will transfer your X credentials SYNOPSIS
sux [OPTS] [-] [[username] [ARGS]] suxterm [OPTS] [-] [username] DESCRIPTION
sux is a wrapper around the standard su command which will transfer your X credentials to the target user. Note, suxterm forces ARGS to be 'xterm', and will try to launch an xterminal window. QUICK CALLING
'sux user' and 'sux - user' behave just like su but transfer $DISPLAY and the X cookies. OPTIONS
--untrusted To generate an untrusted cookie, see 'xauth'. --timout <period> To generate a temporary cookie for <period> seconds, see 'xauth'. -m,-p --preserve-environment In this case sux will override XAUTHORITY to the so that xauth does not try to use the original user's .Xauthority file (which it obviously could not do anyway due to access rights). --no-cookies Just transfer DISPLAY, not the cookies. You could do this if you have already transfered the cookies in a previous invocation of sux. --copy-cookies Copy the cookies using xauth. This is the default method (and only method most of the time). --use-xauthority Instead of transfering the cookies, set the XAUTHORITY environment variable to access the original .Xauthority file. There's a cou- ple caveats with this method. First, due to the access right issues it's only usable by root. But even then it may not work if the .Xauthority file is accessed via NFS, e.g. if the home directories are on NFS (note that this is quite dangerous already since your cookies will travel unencrypted over the network). Then, if root runs commands like xauth add/remove, the .Xauthority's ownership will belong to him. This will leave the original user in trouble as he will no longer be able to access X! So only use this option with great care. Finally, this method does not work if you also want to use '--untrusted' or '--timeout'. --display specify which display to use (in case of having more than one available). AUTHOR
Originally written by Francois Gouget <fgouget@free.fr> Manpage written by Millis Miller <millis@faztek.org> REPORTING BUGS
Report bugs to <millis@faztek.org>. COPYRIGHT
Copyright (C) 2003 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
su (1), xauth (1) sux 1.0 Sept 2003 SUX(1)
All times are GMT -4. The time now is 02:11 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy