Comparing string in bash scripting
0
I have this script:
#!/bin/bash
while IFS="," read -r user store date amount
do
if [[ "$user" != "User" ]]
then
echo $user is different: User
fi
done <<EOF
User, Store, Date, Amount
User1, Store1, Date1, 100
User2, Store2, Date2, 200
EOF
Running script in debug mode:
bash -x script.sh
+ IFS=,
+ read -r user store date amount
+ [[ User != User ]]
+ echo User is different: User
User is different: User
...
I have tried with single quotes, double quotes, single and double containers in the condition statement but it still it won't work. Would someone lead me in the right direction?
string bash csv conditional
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
add a comment |
0
I have this script:
#!/bin/bash
while IFS="," read -r user store date amount
do
if [[ "$user" != "User" ]]
then
echo $user is different: User
fi
done <<EOF
User, Store, Date, Amount
User1, Store1, Date1, 100
User2, Store2, Date2, 200
EOF
Running script in debug mode:
bash -x script.sh
+ IFS=,
+ read -r user store date amount
+ [[ User != User ]]
+ echo User is different: User
User is different: User
...
I have tried with single quotes, double quotes, single and double containers in the condition statement but it still it won't work. Would someone lead me in the right direction?
string bash csv conditional
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
3
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
2
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:echo 'string'requires a semicolon before}, as inecho 'string';; it's not required if}is on a new line, as it was originally.
– Benjamin W.
Nov 14 '18 at 16:31
1
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
Works for me - but I don't understand why you're using Bash and[[when plain POSIX shell and[will do the job much more cheaply. And what's the reason for the sub-shell in thethenclause?
– Toby Speight
Nov 14 '18 at 16:42
add a comment |
0
0
0
I have this script:
#!/bin/bash
while IFS="," read -r user store date amount
do
if [[ "$user" != "User" ]]
then
echo $user is different: User
fi
done <<EOF
User, Store, Date, Amount
User1, Store1, Date1, 100
User2, Store2, Date2, 200
EOF
Running script in debug mode:
bash -x script.sh
+ IFS=,
+ read -r user store date amount
+ [[ User != User ]]
+ echo User is different: User
User is different: User
...
I have tried with single quotes, double quotes, single and double containers in the condition statement but it still it won't work. Would someone lead me in the right direction?
string bash csv conditional
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
I have this script:
#!/bin/bash
while IFS="," read -r user store date amount
do
if [[ "$user" != "User" ]]
then
echo $user is different: User
fi
done <<EOF
User, Store, Date, Amount
User1, Store1, Date1, 100
User2, Store2, Date2, 200
EOF
Running script in debug mode:
bash -x script.sh
+ IFS=,
+ read -r user store date amount
+ [[ User != User ]]
+ echo User is different: User
User is different: User
...
I have tried with single quotes, double quotes, single and double containers in the condition statement but it still it won't work. Would someone lead me in the right direction?
string bash csv conditional
string bash csv conditional
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
edited Nov 14 '18 at 16:42
Toby Speight
16.8k134265
16.8k134265
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
asked Nov 14 '18 at 16:14
Rokov_babcaRokov_babca
1
1
3
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
2
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:echo 'string'requires a semicolon before}, as inecho 'string';; it's not required if}is on a new line, as it was originally.
– Benjamin W.
Nov 14 '18 at 16:31
1
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
Works for me - but I don't understand why you're using Bash and[[when plain POSIX shell and[will do the job much more cheaply. And what's the reason for the sub-shell in thethenclause?
– Toby Speight
Nov 14 '18 at 16:42
add a comment |
3
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
2
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:echo 'string'requires a semicolon before}, as inecho 'string';; it's not required if}is on a new line, as it was originally.
– Benjamin W.
Nov 14 '18 at 16:31
1
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
Works for me - but I don't understand why you're using Bash and[[when plain POSIX shell and[will do the job much more cheaply. And what's the reason for the sub-shell in thethenclause?
– Toby Speight
Nov 14 '18 at 16:42
3
3
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
2
2
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:
echo 'string' requires a semicolon before }, as in echo 'string'; ; it's not required if } is on a new line, as it was originally.– Benjamin W.
Nov 14 '18 at 16:31
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:
echo 'string' requires a semicolon before }, as in echo 'string'; ; it's not required if } is on a new line, as it was originally.– Benjamin W.
Nov 14 '18 at 16:31
1
1
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
Works for me - but I don't understand why you're using Bash and
[[ when plain POSIX shell and [ will do the job much more cheaply. And what's the reason for the sub-shell in the then clause?– Toby Speight
Nov 14 '18 at 16:42
Works for me - but I don't understand why you're using Bash and
[[ when plain POSIX shell and [ will do the job much more cheaply. And what's the reason for the sub-shell in the then clause?– Toby Speight
Nov 14 '18 at 16:42
add a comment |
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3
Cannot reproduce. The code posted here is fine, and though not relevant to the claimed problem here, be aware that the spaces in the CSV file are part of the fields they are adjacent to.
– chepner
Nov 14 '18 at 16:24
Works for me, only User1 and User2 are reported.
– choroba
Nov 14 '18 at 16:24
2
@kit Be careful when editing code. You changed whitespace, which in this case would have broken existing functionality:
echo 'string'requires a semicolon before}, as inecho 'string';; it's not required if}is on a new line, as it was originally.– Benjamin W.
Nov 14 '18 at 16:31
1
@BenjaminW. Thanks your advice ben~ I will keep that in mind.
– kit
Nov 14 '18 at 16:32
Works for me - but I don't understand why you're using Bash and
[[when plain POSIX shell and[will do the job much more cheaply. And what's the reason for the sub-shell in thethenclause?– Toby Speight
Nov 14 '18 at 16:42