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Hello,

I want to delete all lines with given string in file1 and the string val is dynamic.
Can this be done using sed command.

Sample:
vars="test twinning yellow"

for i in $vars
do...

to add with Vino,

-i option in sed is available only in GNU distribution

Sir,

The following error:
awk: syntax error near line 1
awk: bailing out near line 1

If on Solaris, use /usr/bin/nawk or /usr/xpg4/bin/awk

Yes, with every iteration you can print your processed line bit and the some extra line..

There may be many ways of doing this i'll describe just one & probably the easiest one.
Assuming that u r taking input from a fixed file 'input.txt' (whose content u might be changing when u have to...

What are you exactly trying to achieve?
You may also try this:
sed 's/axyz.bnd$/& ===> grant permission/' file

Please use code tags in your posts!
Standard sed is awful: it wants the insertion text on a new line.
sed '/axyz.bnd/ i\
grant permissions given ' file1 sed '/axyz.bnd/ a\
grant permissions given...

Use code tags for code and data sample.

Try

sed 's/patternstring/\n new line string/' file

Use a while read loop and cut the line using parameter expansion (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02): ${line##*/}

awk -F/ '{print $NF}' infile
advc0007.bnd
naac6115.bnd
trkc4822.bnd
trkc4823.bnd
cmpc0105.bnd

while read line
do
x=$(echo "$line" | sed 's:.*/::')
# work with $x
echo $x
done < file