10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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
2. Shell Programming and Scripting
(Using Bash 4.4)
When I write something like dir="~/dox"
ls $dir then I get the message that the directory '~/docs' does not exist. I understand that the tilde is not expanded at the time of the above assignment because of the quotes. But why is it not expanded at the time when the ls command is... (2 Replies)
Discussion started by: Ralph
2 Replies
3. Shell Programming and Scripting
#!/bin/bash
SNMPW='/usr/bin/snmpwalk'
while read h i
do
loc=$($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 < $1
My question is ... ... (1 Reply)
Discussion started by: sumguy
1 Replies
4. Shell Programming and Scripting
I have made the following examples that print various parameter expansions
text: iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018.sac
(text%.*): iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018
(text%%.*): iv-hhz-sac/hpac/hhz
(text#*.): d/iv.hpac..hhz.d.2016.250.070018.sac... (2 Replies)
Discussion started by: kristinu
2 Replies
5. Shell Programming and Scripting
Hello.
The file /etc/fstab contains
UUID=957c3295-9944-1593-82e2-2b90dede4312 / ext4 noatime,discard,acl,user_xattr 1 1
I fill a variable
SOME_LINE=$( cat /etc/fstab | grep \/\..*ext4 | grep noatime,discard )echo $SOME_LINE... (3 Replies)
Discussion started by: jcdole
3 Replies
6. Shell Programming and Scripting
Hello.
I cannot write a command without using eval.
Any help is welcome
Note 1 : What does the function SOMETHING has no importance.
Note 2 : What does the command find has no importance.
It is an expansion variable problem : where to put or or or anythings else
What works (FILTRE_1... (8 Replies)
Discussion started by: jcdole
8 Replies
7. Shell Programming and Scripting
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
8. Shell Programming and Scripting
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
9. Shell Programming and Scripting
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
10. Shell Programming and Scripting
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