All Questions
19
questions
148
votes
11
answers
55k
views
What is the difference between $* and $@?
Consider the following code:
foo () {
echo $*
}
bar () {
echo $@
}
foo 1 2 3 4
bar 1 2 3 4
It outputs:
1 2 3 4
1 2 3 4
I am using Ksh88, but I am interested in other common ...
- 20.1k
3
votes
2
answers
1k
views
issues with GNU tail -f and combination of commands
$ tail -f /logs/filename.log | awk '!(/list)'
I am able to run this command in GNU Linux flavour
But when I written in a script it is not working.
test.ksh:
variable="/logs/filename.log | awk '!(/...
- 31
22
votes
2
answers
1k
views
Why escape trivial characters in shell script?
I just opened a legacy shell script (written in old ksh88 on Solaris) and found the following repeated all throughout the code:
[ -f $myfile ] && \rm -f $myfile
The escaping backslash ...
- 20.1k
129
votes
4
answers
52k
views
Why does parameter expansion with spaces without quotes work inside double brackets "[[" but not inside single brackets "["?
I'm confused with using single or double brackets. Look at this code:
dir="/home/mazimi/VirtualBox VMs"
if [[ -d ${dir} ]]; then
echo "yep"
fi
It works perfectly although the string contains a ...
- 3,108